Month: October 2022

Organic bromides such as alkyl bromides are used as fumigants in agriculture to control insects. 5392-10-9, formula is C9H9BrO3, Name is 2-Bromo-4,5-dimethoxybenzaldehyde. Ethylene bromide is one of the commercially important organic bromides which are the component of leaded gasoline. Related Products of 5392-10-9.

Saha, Argha;Guin, Srimanta;Ali, Wajid;Bhattacharya, Trisha;Sasmal, Sheuli;Goswami, Nupur;Prakash, Gaurav;Sinha, Soumya Kumar;Chandrashekar, Hediyala B.;Panda, Sanjib;Anjana, S. S.;Maiti, Debabrata research published 《 Photoinduced Regioselective Olefination of Arenes at Proximal and Distal Sites》, the research content is summarized as follows. Herein, a photoredox catalytic system constituting a merger of palladium/organo-photocatalyst that forges oxidative olefination in an explicit regioselective fashion with diverse arenes and heteroarenes has been established. Visible light plays a significant role in executing ‘regio-resolved’ Fujiwara-Moritani reaction without the requirement of silver salts and thermal energy. The catalytic system is also amenable toward proximal and distal olefination aided by resp. directing groups, which entails the versatility of the protocol in engaging the entire spectrum of C(sp²)-H olefination. Furthermore, streamlining the synthesis of natural products/chiral mols./drugs and diversification through late-stage functionalizations underscore the importance of this sustainable protocol. The photoinduced attainment of this regioselective transformation is mechanistically established through control reactions and kinetic studies.

Related Products of 5392-10-9, 2-Bromo-4,5-dimethoxybenzaldehyde is a useful research compound. Its molecular formula is C9H9BrO3 and its molecular weight is 245.07 g/mol. The purity is usually 95%.
2-Bromo-4,5-dimethoxybenzaldehyde is a synthetic compound that has been shown to be an effective agent for inducing apoptosis in leukemia cells. It is an efficient method for synthesizing the compound and ha2-Bromo-4,5-dimethoxybenzaldehyde induces cell death by topoisomerase-mediated DNA cleavage, which results in chromosomal fragmentation and high levels of reactive oxygen species in the cell., 5392-10-9.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Vinyl bromides undergo the Heck reaction, which involves C-C coupling with alkene to give substituted alkenes. 629-04-9, formula is C7H15Br, Name is 1-Bromoheptane. Methyl bromide is a precursor in the manufacture of several chemicals and is employed as a soil sterilant, mainly for seed production. COA of Formula: C7H15Br.

Safari, Niloufar;Shirini, Farhad;Tajik, Hassan;Saielli, Giacomo research published 《 NMR and DFT studies of the aggregation behavior of dicationic dialkyl DABCO bistriflimide salts in solution》, the research content is summarized as follows. In this study, various derivatives of 1,4-dialkyl-diazabicyclo[2.2.2]octane-1,4-diium bis(trifluoromethanesulfonyl)imide salts, [C_n.DABCO.C_n][Tf₂N]₂, with different alkyl groups, were synthesized and characterized by their m.ps. and NMR spectra. Moreover, various solutions of [C₄.DABCO.C₄][Tf₂N]₂ and [C₈.DABCO.C₈][Tf₂N]₂ salts in deuterated methanol and acetone in different concentrations were prepared The effect of solvent polarity, concentration and charge d. of the cation on the aggregation behavior of these salts were investigated using ESI-mass spectrometry, ¹H NMR, DOSY NMR experiments and DFT calculations The obtained results showed that in methanol, a protic and very polar solvent, the chem. shift of DABCO protons and the diffusion coefficient of the cation are almost independent of the concentration, except for relatively high concentrations Thus, in this solvent and in the low concentration regime, aggregation is not favored and in high concentration small aggregates can be formed. In contrast, when dissolved in acetone, a less polar solvent, aggregates formation is favored. As a result, chem. shift of DABCO protons and diffusion coefficient of the cation in acetone are more strongly dependent on the concentration

629-04-9, 1-Bromoheptane is a useful research compound. Its molecular formula is C7H15Br and its molecular weight is 179.1 g/mol. The purity is usually 95%.
1-Bromoheptane is a reagent that is used for the preparation of alkylthiophienylzinc chloride.
1-Bromoheptane is a reactive compound that is used in the preparation of p-hydroxybenzoic acid, which is an intermediate in the synthesis of many natural compounds. 1-Bromoheptane has been shown to have biological properties and to inhibit mitochondrial membrane potential. It also causes cell lysis and hepatic steatosis in mice. This compound has been shown to inhibit the activity of enzymes such as acetylcholinesterase, butyrylcholinesterase, and carboxylesterase. 1-Bromoheptane can be used as a model for studying the effects on congestive heart failure by increasing cardiac workloads or decreasing myocardial contractility., COA of Formula: C7H15Br

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Organobromine compounds, also called organobromides, are organic compounds that contain carbon bonded to bromine. 70-23-5, formula is C5H7BrO3, The most pervasive is the naturally produced bromomethane. COA of Formula: C5H7BrO3

Sadeghi Meresht, Abdollah;Ezzatzadeh, Elham;Dehbandi, Behnam;Salimifard, Masoomeh;Rostamian, Rezvaneh research published 《 Fe₃O₄/CuO Nanocomposite Promoted Green Synthesis of Functionalized Quinazolines Using Water Extract of Lettuce Leaves as Green Media: Study of Antioxidant Activity》, the research content is summarized as follows. In this work, five component reactions are utilized for the production of quinazoline derivatives by utilizing the one-pot reaction of 3-hydroxyphthalaldehyde, ethylenediamine, alkyl bromides, electron deficient acetylenic compounds and Et bromoacetate in vicinity of Fe₃O₄/CuO nanocomposites as a high performance catalyst at environment temperature in water extract of lettuce leaves as green solvent. Also, water extract of lettuce leaves was used for synthesis of Fe₃O₄/CuO nanocomposites. The existing quinazoline core in the synthesized compounds caused to ability of antioxidation of synthesized quinazoline. For confirmation of this point, we are used DPPH radical trapping and ferric ion reducing power tests. Outcomes of these tests show that synthesized quinazolines have low DPPH radical trapping and good reducing ability of ferric ion. The excellent yield of reaction, green media and easy separation of product and catalyst are some benefits of this procedure. Highlights water extract of Lettuce leaves was used as solvent for the preparation of quinazolines as cyclic heteroaromatic systems. The present procedure avoids the use of toxic solvent. The present procedure runs in water extract of Lettuce leaves as a green media. This recoverable catalyst makes this protocol attractive and useful as an industrially viable and eco-safe solvent with high yields of products.

COA of Formula: C5H7BrO3, Ethyl bromopyruvate molecular formula is C5H7BrO3 and its molecular weight is 195.01 g/mol. The purity is usually 95%.

Ethyl bromopyruvate is used in a synthesis of thioxothiazolidines from carbon disulfide and primary amines.

Ethyl bromopyruvate is a chemical inhibitor that inhibits the enzyme pyruvate dehydrogenase, which is responsible for the conversion of pyruvic acid to acetyl-CoA. This inhibition leads to a decrease in ATP levels and can cause metabolic disorders. Ethyl bromopyruvate is used as an anthelmintic drug and in asymmetric synthesis. It is also used in the synthesis of thiostrepton, an antibiotic that has been shown to have antimicrobial activity against Gram-positive bacteria, including Staphylococcus aureus and Streptococcus pneumoniae., 70-23-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Organobromine compounds, also called organobromides, are organic compounds that contain carbon bonded to bromine. 6911-87-1, formula is C7H8BrN, The most pervasive is the naturally produced bromomethane. Quality Control of 6911-87-1

Saadati, Fariba;Griffin, Samuel E.;Schafer, Laurel L. research published 《 Guanidinate Early-Transition-Metal Complexes: Efficient and Selective Hydroaminoalkylation of Alkenes》, the research content is summarized as follows. The influence of N,N-chelating guanidinate ligands on the reactivity of in situ generated Ta complexes for the intermol. hydroaminoalkylation of amines were explored. Increased conversion was observed with the Na salt of 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBDNa) paired with the Ta precursor Ta(CH₂SiMe₃)₃Cl₂ at 110°. Terminal alkenes underwent hydroaminoalkylation with a variety of secondary amine substrates to give substituted secondary amine products. Mono- and bis(guanidinate) Ta complexes were prepared, and their structures were studied. Importantly, the guanidinate ligand could be alkylated in the β position using Ta(NMe₂)₅ as a precatalyst to give the linear regioisomer as the major product, and this substituted ligand gave improved hydroaminoalkylation conversion in comparison to the parent ligand.

6911-87-1, 4-Bromo-N-methylaniline is a aniline based compound known to exhibit mutagenic properties.
4-Bromo-N-methylaniline is a useful research compound. Its molecular formula is C7H8BrN and its molecular weight is 186.05 g/mol. The purity is usually 95%.
4-Bromophenylmethylamine is an organic compound that has anti-inflammatory properties and is used as a pharmaceutical. It belongs to the group of amines. The hydrolysis of 4-bromophenylmethylamine by hydrochloric acid produces phenol and bromamine (NHBr). The reaction system can be used to synthesize a number of compounds, including anilines, benzofurans, and other aromatic compounds. 4-Bromophenylmethylamine reacts with muscle tissue in a similar manner as acetaminophen does. This drug also has been shown to have significant effects on the energy metabolism in the muscles of rats that are given carbon source., Quality Control of 6911-87-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Organic bromides such as alkyl bromides are used as fumigants in agriculture to control insects. 90-59-5, formula is C7H4Br2O2, Name is 3,5-Dibromo-2-hydroxybenzaldehyde. Ethylene bromide is one of the commercially important organic bromides which are the component of leaded gasoline. Application of C7H4Br2O2.

Ryzhkov, Fedor V.;Elinson, Michail N.;Ryzhkova, Yuliya E.;Vereshchagin, Anatoly N.;Korolev, Victor A.;Egorov, Mikhail P. research published 《 Pseudo-four-component synthesis and in silico studies of 5-(5-hydroxy-3-methyl-1H-pyrazol-4-yl)-substituted 5H-chromeno[2,3-b]pyridines》, the research content is summarized as follows. A new pseudo-four-component synthetic approach to 5-(5-hydroxy-3-methyl-1H-pyrazol-4-yl)-substituted 5H-chromeno[2,3-b]pyridines I [R¹ = H, OEt, Br, I; R² = H, OH; R³ = H, Br, I, NO₂; R⁴ = H, Ph; R⁵ = H; R³R⁵ = CH=CH-CH=CH] with 68%-95% yields was reported. This multicomponent reaction opened an efficient and convenient way to substituted 5H-chromeno[2,3-b]pyridines I, which were promising compounds in medicinal chem. and for the treatment of lung cancer through inhibition of aldo-keto reductase 1B10. A new consensus approach of mol. docking and mol. dynamics was applied for the investigation of interaction of synthesized 5H-chromeno[2,3-b]pyridines I and aldo-keto reductase 1B10.

90-59-5, 3,5-Dibromosalicylaldehyde reacts with alkyl cyanoacetates in the presence of ammonium acetate to yield 4H- chromenes.

3,5-Dibromosalicylaldehyde, also known as 3,5-Dibromosalicylaldehyde, is a useful research compound. Its molecular formula is C7H4Br2O2 and its molecular weight is 279.91 g/mol. The purity is usually 95%.

3,5-Dibromosalicylaldehyde reacts with alkyl cyanoacetates in the presence of ammonium acetate to yield 4H- chromenes. 3,5-Dibromosalicylaldehyde can be used in the synthesis of Schiff base and can be used as reactant for synthesis of Schiff base ligands which forms mononuclear complexes with copper(II), nickel(II), zinc(II) and cobalt(II).

3,5-Dibromosalicylaldehyde is a copper complex that has been synthesized from 3,5-dibromosalicylaldehyde and copper chloride. FTIR spectroscopy revealed that the coordination geometry of the copper complex is octahedral with two nitrogen atoms in the equatorial plane. The presence of hydrogen bonding interactions was confirmed by homologous protein adsorption experiments. This chemical structure was determined using X-ray crystallography and fluorescence probe experiments. The copper complex showed high affinity for malonic acid, which is an ester hydrochloride. The molecular mechanism of this interaction is based on adsorption, which occurs through hydrogen bonding interactions and hydrophobic interactions. Structural analysis revealed that the polymeric matrix consists of a three-dimensional network of crosslinked chains, while FTIR analysis indicated a possible disulfide bond between two cysteine residues., Application of C7H4Br2O2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Organic bromides such as alkyl bromides are used as fumigants in agriculture to control insects. 629-04-9, formula is C7H15Br, Name is 1-Bromoheptane. Ethylene bromide is one of the commercially important organic bromides which are the component of leaded gasoline. Formula: C7H15Br.

Ryu, Jiwon;Manivannan, Ramalingam;Son, Young-A. research published 《 Azo dye-based optical probe for the detection toward mimic molecule of date rape drug》, the research content is summarized as follows. The azo dye-based visual responsive optical probe 5-(diheptylamino)-2-((3,5-dinitrothiophen-2-yl)diazenyl)phenol (DP), for the purpose of detection toward the mimic mol. of date rape drug was designed, synthesized and characterized. The recognizing abilities toward the mimic mol. (sodium butyrate) of date rape drug (gamma-hydroxybutyric acid) were examined in water. The prepared mol. was visually, anal., and theor. confirmed with the sensing ability of the probe. Developing an easy-to-use sensor kit will work spontaneously with a detectable colorimetric response in daylight. Obtained color change from light turquoise color to bluish-purple toward sodium butyrate containing alc. beverages was successfully recognized and confirmed. Even though the color change from light turquoise to bluish-purple obtained, which is not easily recognized clearly with the eye under normal light, UV-Visible spectra indicate the changes, thus the probe can be utilized productively to protect the victim from sexual assault.

Formula: C7H15Br, 1-Bromoheptane is a useful research compound. Its molecular formula is C7H15Br and its molecular weight is 179.1 g/mol. The purity is usually 95%.
1-Bromoheptane is a reagent that is used for the preparation of alkylthiophienylzinc chloride.
1-Bromoheptane is a reactive compound that is used in the preparation of p-hydroxybenzoic acid, which is an intermediate in the synthesis of many natural compounds. 1-Bromoheptane has been shown to have biological properties and to inhibit mitochondrial membrane potential. It also causes cell lysis and hepatic steatosis in mice. This compound has been shown to inhibit the activity of enzymes such as acetylcholinesterase, butyrylcholinesterase, and carboxylesterase. 1-Bromoheptane can be used as a model for studying the effects on congestive heart failure by increasing cardiac workloads or decreasing myocardial contractility., 629-04-9.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Organobromine compounds, also called organobromides, are organic compounds that contain carbon bonded to bromine. 629-04-9, formula is C7H15Br, The most pervasive is the naturally produced bromomethane. SDS of cas: 629-04-9

Russell, Richard W.;Barker, Timothy J. research published 《 Transition Metal-Free sp³-sp³ Carbon-Carbon Coupling between Benzylboronic Esters and Alkyl Bromides》, the research content is summarized as follows. A transition metal-free coupling reaction of benzylboronic esters and alkyl halides to form compounds PhCH₂R [R = CH₂(CH₂)₅CH₃, CH₂(CH₂)₂CH=CH₂, CH₂(CH₂)₃CH₂OTIPS, etc.] was developed. Both alkyl bromides and alkyl iodides were found to be competent substrates with the nucleophilic boronate intermediate generated from the combination of benzylboronic ester and an alkyllithium. Good chemoselectivity was observed for the reaction with the alkyl bromide in substrates with a second electrophile present. Both secondary and tertiary benzylboronic esters were effective nucleophiles in the reaction with primary alkyl halides. Mechanistic observations were consistent with a radical mechanism.

SDS of cas: 629-04-9, 1-Bromoheptane is a useful research compound. Its molecular formula is C7H15Br and its molecular weight is 179.1 g/mol. The purity is usually 95%.
1-Bromoheptane is a reagent that is used for the preparation of alkylthiophienylzinc chloride.
1-Bromoheptane is a reactive compound that is used in the preparation of p-hydroxybenzoic acid, which is an intermediate in the synthesis of many natural compounds. 1-Bromoheptane has been shown to have biological properties and to inhibit mitochondrial membrane potential. It also causes cell lysis and hepatic steatosis in mice. This compound has been shown to inhibit the activity of enzymes such as acetylcholinesterase, butyrylcholinesterase, and carboxylesterase. 1-Bromoheptane can be used as a model for studying the effects on congestive heart failure by increasing cardiac workloads or decreasing myocardial contractility., 629-04-9.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Vinyl bromides undergo the Heck reaction, which involves C-C coupling with alkene to give substituted alkenes. 4224-70-8, formula is C6H11BrO2, Name is 6-Bromohexanoic acid. Methyl bromide is a precursor in the manufacture of several chemicals and is employed as a soil sterilant, mainly for seed production. Synthetic Route of 4224-70-8.

Ruffell, Katie;Smith, Frances R.;Green, Michael T.;Nicolle, Simon M.;Inman, Martyn;Lewis, William;Hayes, Christopher J.;Moody, Christopher J. research published 《 Diazophosphonates: Effective Surrogates for Diazoalkanes in Pyrazole Synthesis》, the research content is summarized as follows. Diazophosphonates, readily prepared from α-ketophosphonates by oxidation of the corresponding hydrazones in batch or in flow, are useful partners in 1,3-dipolar cycloaddition reactions to alkynes to give N-H pyrazoles, including the first intramol. examples of such a process. The phosphoryl group imbues a number of desirable properties into the diazo 1,3-dipole. The electron-withdrawing nature of the phosphoryl stabilizes the diazo compound making it easier to handle, while the ability of the phosphoryl group to migrate readily in a [1,5]-sigmatropic rearrangement enables its transfer from C to N to aromatize the initial cycloadduct, and hence its facile removal from the final pyrazole product. Overall, the diazophosphonate acts as a surrogate for the much less stable diazoalkane in cycloadditions, with the phosphoryl group playing a vital, but traceless, role. The cycloaddition proceeds more readily with alkynes bearing electron-withdrawing groups, and is regiospecific with asym. alkynes. The potential of diazophosphonates for use in bioorthogonal cycloadditions is demonstrated by their facile addition to strained alkynes.

4224-70-8, 6-bromohexanoic acid is an organobromine compound comprising hexanoic acid having a bromo substituent at the 6-position. It derives from a hexanoic acid.
6-Bromohexanoic acid is a useful research compound. Its molecular formula is C6H11BrO2 and its molecular weight is 195.05 g/mol. The purity is usually 95%.
6-Bromohexanoic acid is useful for the preparation of anti-CTLA4 compounds as antitumor agents.
6-Bromohexanoic acid is a fatty acid that has been shown to be an effective agent for the treatment of cancer. It is used in gene therapy to inhibit the growth of cancer cells by binding to and then activating transcription factors. 6-Bromohexanoic acid can also be used as a chemotherapeutic agent and has been shown to cause apoptosis in monoclonal antibody-treated cells. 6-Bromohexanoic acid has pharmacokinetic properties that are similar to those of other fatty acids. The reaction solution was found to have high chemical stability, which may be due to the presence of nitrogen atoms. This reaction solution was found to adsorb onto the surface of monoclonal antibodies and cell culture, altering their properties., Synthetic Route of 4224-70-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine. 90-59-5, formula is C7H4Br2O2, Name is 3,5-Dibromo-2-hydroxybenzaldehyde, SDS of cas: 90-59-5

Rudbari, Hadi Amiri;Kordestani, Nazanin;Cuevas-Vicario, Jose V.;Zhou, Min;Efferth, Thomas;Correia, Isabel;Schirmeister, Tanja;Barthels, Fabian;Enamullah, Mohammed;Fernandes, Alexandra R.;Micale, Nicola research published 《 Investigation of the influence of chirality and halogen atoms on the anticancer activity of enantiopure palladium(II) complexes derived from chiral amino-alcohol Schiff bases and 2-picolylamine》, the research content is summarized as follows. In continuation of authors work on the synthesis of heteroleptic enantiopure Pd(II)-complexes, four mixed-ligand enantiomeric pairs of Pd(II) complexes (J1–J8), [Pd(pic) (R or S)-N-(2,3-dihydroxypropyl)-3,5-X₁,X₂-salicylaldimines]NO₃, (pic = 2-picolylamine; X₁ = X₂ = Cl, Br, I; X₁/X₂ = Br/Cl), were synthesized by the reaction of enantiopure halogen-substituted Schiff bases (R or S)-N-(2,3-dihydroxypropyl)-3,5-X₁,X₂-salicylaldimines with [Pd(pic)Cl₂] and obtained as yellow precipitates The composition and structure of the complexes were confirmed by elemental analyses, NMR (¹H and ¹³C), FT-IR spectroscopy and theor. calculations The NMR data confirmed the stability of these complexes in DMSO. The electronic structure of the reported complexes was investigated using UV-Vis absorption and electronic CD (ECD) spectroscopy. The antiproliferative activity of the newly synthesized metal complexes was evaluated against CCRF-CEM acute lymphocytic leukemia cells and their multidrug-resistant CEM/ADR5000 subline showing IC₅₀ values in the low-micromolar range. The two most active compounds (J4 and J6) in the assays above were selected for further biol. testing, i.e. cell cycle analyses, apoptosis detection and ability to inhibit the chymotrypsin-like activity of the 20S human proteasome. Both compounds arrested the G2/M cell cycle phase in a concentration-dependent manner without inducing significant apoptosis and inhibited the above-mentioned proteolytic activity of the proteasome in the low-micromolar range.

SDS of cas: 90-59-5, 3,5-Dibromosalicylaldehyde reacts with alkyl cyanoacetates in the presence of ammonium acetate to yield 4H- chromenes.

3,5-Dibromosalicylaldehyde, also known as 3,5-Dibromosalicylaldehyde, is a useful research compound. Its molecular formula is C7H4Br2O2 and its molecular weight is 279.91 g/mol. The purity is usually 95%.

3,5-Dibromosalicylaldehyde reacts with alkyl cyanoacetates in the presence of ammonium acetate to yield 4H- chromenes. 3,5-Dibromosalicylaldehyde can be used in the synthesis of Schiff base and can be used as reactant for synthesis of Schiff base ligands which forms mononuclear complexes with copper(II), nickel(II), zinc(II) and cobalt(II).

3,5-Dibromosalicylaldehyde is a copper complex that has been synthesized from 3,5-dibromosalicylaldehyde and copper chloride. FTIR spectroscopy revealed that the coordination geometry of the copper complex is octahedral with two nitrogen atoms in the equatorial plane. The presence of hydrogen bonding interactions was confirmed by homologous protein adsorption experiments. This chemical structure was determined using X-ray crystallography and fluorescence probe experiments. The copper complex showed high affinity for malonic acid, which is an ester hydrochloride. The molecular mechanism of this interaction is based on adsorption, which occurs through hydrogen bonding interactions and hydrophobic interactions. Structural analysis revealed that the polymeric matrix consists of a three-dimensional network of crosslinked chains, while FTIR analysis indicated a possible disulfide bond between two cysteine residues., 90-59-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Vinyl bromides undergo the Heck reaction, which involves C-C coupling with alkene to give substituted alkenes. 90-59-5, formula is C7H4Br2O2, Name is 3,5-Dibromo-2-hydroxybenzaldehyde. Methyl bromide is a precursor in the manufacture of several chemicals and is employed as a soil sterilant, mainly for seed production. Electric Literature of 90-59-5.

Rudbari, Hadi Amiri;Saadati, Arezoo;Aryaeifar, Mahnaz;Blacque, Olivier;Correia, Isabel;Islam, Mohammad Khairul;Woschko, Dennis;Janiak, Christoph;Enamullah, Mohammed research published 《 Pseudotetrahedral Zn(II)-(R or S)-dihalogen-salicylaldiminato complexes with Λ- or Δ-chirality induction at-metal》, the research content is summarized as follows. Reactions of enantiopure (S or R)-N-1-(phenyl)ethyl-2,4-X¹,X²-salicylaldimine (S-H or R-H; X¹, X² = dihalogen) with Zn(II)-nitrate give bis[(S or R)-N-1-(phenyl)ethyl-2,4-X¹,X²-salicylaldiminato-κ²N,O]-Zn(II), (Δ-ZnS or Λ-ZnR) with Δ/Λ-chirality induction at-metal in the C₂-sym. mols. EI-mass spectra show parent ion peaks. X-ray structures indicate that two phenolate-O and two imine-N atoms from two mols. of the Schiff bases coordinate to the Zn(II) ion in a pseudotetrahedral geometry. Structural analyses give evidence that the S- or R-ligand chirality gives only one diastereomer Δ-ZnS or Λ-ZnR in an enantiopure crystal. Gas-phase optimized structures suggest that the Δ-ZnS or Λ-ZnR diastereomers are slightly more stable than Λ-ZnS or Δ-ZnR by 1-2 kcal mol^-1. The intramol. interactions were analyzed with the Independent Gradient Model (IGM) using the program Multiwfn on the optimized structures and also indicate the diastereomeric preference of Δ-ZnS1 over Λ-ZnS1 (or Λ-ZnR1 over Δ-ZnR1). Variable time and temperature ¹H NMR spectra support the presence of only one diastereomer Λ-ZnR or Δ-ZnS in the bulk samples, backed by the simulated spectra which exhibit no diastereomerization in solution In contrast, the reported Zn(II)-(R or S)-salicylaldiminato/naphthaldiminato complexes show a diastereomeric mixture of both Δ- and Λ-forms and a Δ ⇄ Λ equilibrium in solution Electronic CD (ECD) spectra in solution display expected mirror-image relations for the (S or R)-Schiff base ligands and the (S or R)-ligated complexes. Combined analyses of exptl. and simulated ECD spectra further support the notion of diastereomeric excess of Δ-ZnS or Λ-ZnR in solution The overall results thus suggest the preservation of chirality at-Zn induced by S- or R-ligands in a solid or solution Supramol. packing analyses explore different kinds of intermol. interactions with the strongest one for X···O. Only the halogen atom in the para position is involved in these interactions with Br···O > Cl···O. Hirshfeld surface analyses also support these interactions between two mols. at a distance shorter than the sum of the van der Wall radii. Comparison of the exptl. and simulated PXRD patterns from the single-crystal x-ray structures shows a good matching and confirms the phase purity of the bulk samples.

Electric Literature of 90-59-5, 3,5-Dibromosalicylaldehyde reacts with alkyl cyanoacetates in the presence of ammonium acetate to yield 4H- chromenes.

3,5-Dibromosalicylaldehyde, also known as 3,5-Dibromosalicylaldehyde, is a useful research compound. Its molecular formula is C7H4Br2O2 and its molecular weight is 279.91 g/mol. The purity is usually 95%.

3,5-Dibromosalicylaldehyde reacts with alkyl cyanoacetates in the presence of ammonium acetate to yield 4H- chromenes. 3,5-Dibromosalicylaldehyde can be used in the synthesis of Schiff base and can be used as reactant for synthesis of Schiff base ligands which forms mononuclear complexes with copper(II), nickel(II), zinc(II) and cobalt(II).

3,5-Dibromosalicylaldehyde is a copper complex that has been synthesized from 3,5-dibromosalicylaldehyde and copper chloride. FTIR spectroscopy revealed that the coordination geometry of the copper complex is octahedral with two nitrogen atoms in the equatorial plane. The presence of hydrogen bonding interactions was confirmed by homologous protein adsorption experiments. This chemical structure was determined using X-ray crystallography and fluorescence probe experiments. The copper complex showed high affinity for malonic acid, which is an ester hydrochloride. The molecular mechanism of this interaction is based on adsorption, which occurs through hydrogen bonding interactions and hydrophobic interactions. Structural analysis revealed that the polymeric matrix consists of a three-dimensional network of crosslinked chains, while FTIR analysis indicated a possible disulfide bond between two cysteine residues., 90-59-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary