Month: October 2022

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 In Synthesis of 90-59-5.

Hu, Yijie;Wang, Xiaoli;Ren, Nan;Li, Na;Li, Jianyang;Chen, Jie;Zhang, Hui;Deng, Hongmei;Cao, Weiguo;Lin, Jin-Hong research published ã€?A Convenient Synthesis of Fluoroalkylated Benzimidazole- or Indole-fused Benzoxazinesã€? the research content is summarized as follows. Herein, the first synthesis of fluoroalkylated benzimidazole- or indole-fused benzoxazines I (R = CF₃, C₂F₅, C₃H₇; R¹ = 2-OMe, 2-Br, 4-Cl, etc.) or II (R² = H, F; R³ = H, 10-Me, 10-Br, 9,11-(Me)₂) by using fluoroalkylated propiolates RCCC(O)₂Me as building blocks is described. The reactions proceeded smoothly under mild conditions to give the desired products I and II in moderate to high yields. Notably, benzimidazole-fused products I were obtained by a convenient one-pot two-step process.

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 In Synthesis of 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. 585-76-2, formula is C7H5BrO2, Name is 3-Bromobenzoic acid. Methyl bromide is a precursor in the manufacture of several chemicals and is employed as a soil sterilant, mainly for seed production. HPLC of Formula: 585-76-2.

Hu, Xiao-Qiang;Liu, Zi-Kui;Hou, Ye-Xing;Xu, Ji-Hang;Gao, Yang research published ã€?Merging C-H Activation and Strain-Release in Ruthenium-Catalyzed Isoindolinone Synthesisã€? the research content is summarized as follows. The merger of strain-release of 1,2-oxazetidines I (R = 4-Me, 2,4,5-(OMe)₃, 4-Br, etc.) with carboxylic acids 2-R¹-3-R²-4-R³-5-R⁴C₆HC(O)OH [R¹ = H, Me, Bn, I, etc.; R² = H, Ph, Br, Me, etc.; R¹R² = -(CH₂)₄-; R³ = H, Me, t-Bu, Br, etc.; R²R³ = -CH=CH-CH=CH-; R⁴ = H, OMe] directed C-H activation in catalytic synthesis of isoindolinones II was reported for the first time. This reaction opens a new and sustainable avenue to prepare a range of structurally diverse isoindolinone skeletons II from readily available benzoic acids. The success of late-stage functionalization of some bioactive acids II, and concise synthesis of biol. important skeletons demonstrated its great synthetic potential in drug discovery. Mechanistic studies indicated a plausible C-H activation/β-carbon elimination/intramol. cyclization cascade pathway.

HPLC of Formula: 585-76-2, 3-bromobenzoic acid is a bromobenzoic acid carrying a single bromo subsituent at the 3-position.
3-Bromobenzoic acid, also known as 3-Bromobenzoic acid, is a useful research compound. Its molecular formula is C7H5BrO2 and its molecular weight is 201.02 g/mol. The purity is usually 95%.
3-bromobenzoic acid is used as a reagent in the synthesis of deoxypodophyllotoxin derivatives with insecticidal activity. Also used as a reagent in the synthesis of thiazole derivatives with antibacterial activity.
3-bromobenzoic acid is a molecule that is classified as a Group P2. It has an electronegativity of 1.3 and an acidity of 0.8, which are both in the middle range of values for this group. 3-Bromobenzoic acid is soluble in water and is soluble in ethanol, acetone, and ether. The chemical structure of 3-bromobenzoic acid can be determined by its monoclonal antibody binding sites, electrochemical impedance spectroscopy data, and Langmuir adsorption isotherm data. 3-Bromobenzoic acid reacts with hydrochloric acid to form benzoate and HCl gas. Chronic exposure to 3-bromobenzoic acid has been shown to cause glutamate dehydrogenase inhibition, leading to an accumulation of p-hydroxybenzoic acid in the body. , 585-76-2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Organic bromides such as alkyl bromides are used as fumigants in agriculture to control insects. 585-76-2, formula is C7H5BrO2, Name is 3-Bromobenzoic acid. Ethylene bromide is one of the commercially important organic bromides which are the component of leaded gasoline. Application In Synthesis of 585-76-2.

Hu, Xiao-Qiang;Hou, Ye-Xing;Liu, Zi-Kui;Gao, Yang research published ã€?Ruthenium-catalyzed C-H/C-N bond activation: facile access to isoindolinonesã€? the research content is summarized as follows. A facile ruthenium-catalyzed C-H/C-N bond activation and the subsequent annulation of readily available benzoic acids with in situ generated formaldimines was reported. The choice of solvent and base was critical for this reaction. This protocol allowed the efficient synthesis of a wide range of biol. important isoindolinones I [R = Ts, 4-ClC₆H₄SO₂, 4-t-BuC₆H₄SO₂, 4-F₃COC₆H₄SO₂; R¹ = H, Me, Ph, etc.; R² = H, Br, OPh, etc.; R³ = H, n-Bu, Cl, etc.; R⁴ = H, Cl, Br; R¹R² = (CH₂)₄; R²R³ = CH=CH-CH=CH] in useful to excellent yields without the use of any external oxidants. The late-stage modification of bioactive acids such as adapalene, bexarotene and flufenamic acid demonstrated the synthetic utility of this methodol.

585-76-2, 3-bromobenzoic acid is a bromobenzoic acid carrying a single bromo subsituent at the 3-position.
3-Bromobenzoic acid, also known as 3-Bromobenzoic acid, is a useful research compound. Its molecular formula is C7H5BrO2 and its molecular weight is 201.02 g/mol. The purity is usually 95%.
3-bromobenzoic acid is used as a reagent in the synthesis of deoxypodophyllotoxin derivatives with insecticidal activity. Also used as a reagent in the synthesis of thiazole derivatives with antibacterial activity.
3-bromobenzoic acid is a molecule that is classified as a Group P2. It has an electronegativity of 1.3 and an acidity of 0.8, which are both in the middle range of values for this group. 3-Bromobenzoic acid is soluble in water and is soluble in ethanol, acetone, and ether. The chemical structure of 3-bromobenzoic acid can be determined by its monoclonal antibody binding sites, electrochemical impedance spectroscopy data, and Langmuir adsorption isotherm data. 3-Bromobenzoic acid reacts with hydrochloric acid to form benzoate and HCl gas. Chronic exposure to 3-bromobenzoic acid has been shown to cause glutamate dehydrogenase inhibition, leading to an accumulation of p-hydroxybenzoic acid in the body. , Application In Synthesis of 585-76-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Organic compounds having carbon bonded to bromine are called organic bromides. 5445-17-0, formula is C4H7BrO2, Name is Methyl 2-bromopropanoate. Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Application In Synthesis of 5445-17-0.

Hu, Xiao;Tao, Minglin;Ma, Zhongxiao;Zhang, Yi;Li, Yanni;Liang, Deqiang research published ã€?Regioselective Photocatalytic Dialkylation/Cyclization Sequence of 3-Aza-1,5-dienes: Access to 3,4-Dialkylated 4-Pyrrolin-2-onesã€? the research content is summarized as follows. A visible-light-induced regioselective tandem enamido β-C(sp²)-H alkylation/acrylamido alkylation/cyclizative alkenylation sequence of 3-aza-1,5-dienes is presented. This protocol is regiospecific, features a broad substrate scope, and provides a direct access to 3,4-dialkylated 4-pyrrolin-2-ones from readily available N-alkenylacrylamides. It is readily scalable to a gram scale, and could be induced by natural sunlight.

5445-17-0, Methyl 2-bromopropionate, also known as Methyl 2-bromopropionate, is a useful research compound. Its molecular formula is C4H7BrO2 and its molecular weight is 167 g/mol. The purity is usually 95%.
Methyl 2-bromopropionate is used in the synthesis of poly(ADP-Ribose)polymerase inhibitors derived from benzoxazin-3-one. Also used in the synthesis of 5-HT2C antagonists affecting serotonin levels.
Methyl 2-bromopropanoate is a chemical compound that can be synthesized in an asymmetric manner. The reaction of methyl 2-bromopropanoate with hydrochloric acid gives the corresponding carboxylic acid, methyl propanoate, and hydrogen bromide in a 1:1 ratio. It has been shown that methyl 2-bromopropanoate is a potential catalyst for the reduction of chloride to chloride ion via the borohydride reduction method. Methyl 2-bromopropanoate has also been used as a model system for studying halides and copper complexes. Magnetic resonance spectroscopy studies have revealed that this chemical compound has a high redox potential and kinetic properties., Application In Synthesis of 5445-17-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. 585-76-2, formula is C7H5BrO2, Name is 3-Bromobenzoic acid. Organobromine compounds have fallen under increased scrutiny for their environmental impact., Formula: C7H5BrO2.

Hu, Wenbo;Yan, Liqin;Zuo, Youpeng;Kong, Shuwen;Pu, Yue;Tang, Qiang;Wang, Xinyu;He, Xinwei;Shang, Yongjia research published �Rhodium(III)-Catalyzed Three-Component Cascade Annulation for Modular Assembly of N-Alkoxylated Isoindolin-1-Ones with Quaternary Carbon Center� the research content is summarized as follows. A cascade C-H activation, annulation and etherification of N-hydroxybenzamides with propargylamines provided a flexible route to N-alkoxylated 3-arylisoindolin-1-ones. Three new bonds (C-C, C-N, and C-O) were generated to afford a series of isoindolin-1-ones bearing a tetrasubstituted carbon in 49-82% yield. The utility of this method was showcased by gram-scale synthesis and synthetic transformations of the product to access structurally diverse isoindolinones.

585-76-2, 3-bromobenzoic acid is a bromobenzoic acid carrying a single bromo subsituent at the 3-position.
3-Bromobenzoic acid, also known as 3-Bromobenzoic acid, is a useful research compound. Its molecular formula is C7H5BrO2 and its molecular weight is 201.02 g/mol. The purity is usually 95%.
3-bromobenzoic acid is used as a reagent in the synthesis of deoxypodophyllotoxin derivatives with insecticidal activity. Also used as a reagent in the synthesis of thiazole derivatives with antibacterial activity.
3-bromobenzoic acid is a molecule that is classified as a Group P2. It has an electronegativity of 1.3 and an acidity of 0.8, which are both in the middle range of values for this group. 3-Bromobenzoic acid is soluble in water and is soluble in ethanol, acetone, and ether. The chemical structure of 3-bromobenzoic acid can be determined by its monoclonal antibody binding sites, electrochemical impedance spectroscopy data, and Langmuir adsorption isotherm data. 3-Bromobenzoic acid reacts with hydrochloric acid to form benzoate and HCl gas. Chronic exposure to 3-bromobenzoic acid has been shown to cause glutamate dehydrogenase inhibition, leading to an accumulation of p-hydroxybenzoic acid in the body. , Formula: C7H5BrO2

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

Hu, Sha;Wu, Jiale;Lu, Zuolin;Wang, Jiaqi;Tao, Yuan;Jiang, Meifen;Chen, Fener research published ã€?TfOH-Catalyzed N-H Insertion of α-Substituted-α-Diazoesters with Anilines Provides Access to Unnatural α-Amino Estersã€? the research content is summarized as follows. A time-economical TfOH-catalyzed N-H insertion between anilines and α-alkyl and α-aryl-α-diazoacetates provides a straightforward approach to access unnatural α-amino esters, which readily underwent various transformations and can thus be used for the synthesis of pharmaceutically relevant mols. The α-amino esters were obtained in moderate to excellent yields.

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

A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. 4224-70-8, formula is C6H11BrO2, Name is 6-Bromohexanoic acid. Organobromine compounds have fallen under increased scrutiny for their environmental impact., HPLC of Formula: 4224-70-8.

Hu, Rong;Wang, Wan-Li;Yang, Ying-Yue;Hu, Xia-Tong;Wang, Qi-Wei;Zuo, Wei-Qiong;Xu, Ying;Feng, Qiang;Wang, Ning-Yu research published �Identification of a selective BRD4 PROTAC with potent antiproliferative effects in AR-positive prostate cancer based on a dual BET/PLK1 inhibitor� the research content is summarized as follows. BRD4-targeted proteolysis targeting chimera (PROTAC) have exhibited promising in vitro and in vivo anticancer activity in a number of cancer models. However, the clin. development of current reported BRD4-PROTACs have stagnated, largely due to the safety risks caused by their poor degradation selectivity. In this study, we designed and synthesized a series of PROTACs based on our recently reported dual BET/PLK1 inhibitor WNY0824, which led to the discovery of an isoform-selective and potent BRD4-PROTAC 12a (WWL0245). WWL0245 exhibited excellent selective cytotoxicity in the BETi sensitive cancer cell lines, including AR-pos. prostate cancer cell lines. It could also efficiently induce ubiquitin-proteasomal degradation of BRD4 in AR-pos. prostate cancer cell lines, with sub-nanomolar half-maximal degrading concentration (DC50) and maximum degradation (Dmax) > 99%. Moreover, WWL0245 induced cell cycle arrest at the G0/G1 phase and apoptosis in AR-pos. prostate cancer by downregulation of the protein levels of AR, PSA and c-Myc as well as transcriptionally suppressed AR-regulated genes. WWL0245 was thus expected to be developed as a promising drug candidate for AR-pos. prostate cancer and a valuable tool compound to study the biol. function of BRD4.

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., HPLC of Formula: 4224-70-8

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. Product Details of C6H11BrO2.

Hu, Qiang;Wang, Kesi;Qiu, Liyan research published �The 6-Aminocaproic acid as a linker to improve near-infrared fluorescence imaging and photothermal cancer therapy of PEGylated indocyanine green� the research content is summarized as follows. Clin. extensive application of indocyanine green (ICG) is limited by several drawbacks such as poor bioenvironmental stability, aggregate propensity, and rapid elimination from the body, etc. In this study, we construct a novel amphiphilic mPEG-ACA-ICG conjugate by modifying synthetic heptamethine cyanine derivative ICG-COOH with a hydrophobic linker 6-aminocaproic acid (ACA) and amino-terminal poly(ethylene glycol) (mPEG-NH2). The as-prepared mPEG-ACA-ICG conjugate has the ability to self-assemble into micellar aggregates in an aqueous solution with a lower CMC value than mPEG-ICG conjugate without ACA linker. More importantly, compared with free ICG and mPEG-ICG conjugate, mPEG-ACA-ICG nanomicelles exhibited better stability and higher photothermal conversion efficiency upon near-IR light irradiation due to the intramol. introduction of a hydrophobic ACA segment. In our in vivo experiment, mPEG-ACA-ICG nanomicelles ensured the formidable effect on tumor photothermal therapy (PTT) and the maximum tumor inhibition rate reached 72.6%. In addition, real-time determination ability for fluorescence image-guided surgery (FIGS) of mPEG-ACA-ICG nanomicelles was also confirmed on tumor xenograft mice model. Taken together, mPEG-ACA-ICG conjugate may hold great promise for non-invasive cancer theranostics.

Product Details of C6H11BrO2, 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., 4224-70-8.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Organic compounds having carbon bonded to bromine are called organic bromides. 629-04-9, formula is C7H15Br, Name is 1-Bromoheptane. Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Formula: C7H15Br.

Hu, Pan;Shen, Shaohang;Zhao, Donghua;Wei, Hua;Ge, Jun;Jia, Feiyue;Zhang, Xiangxiang;Yang, Hu research published ã€?The influence of hydrophobicity on sludge dewatering associated with cationic starch-based flocculantsã€? the research content is summarized as follows. Coagulation/flocculation is an extensive and effective pretreatment technol. for improving the sludge dewaterability. A series of hydrophobically associated cationic starch-based flocculants (CS-DMRs) with different degrees of hydrophobicity but similar charge densities were designed and synthesized. The CS-DMRs exhibited excellent sludge dewatering performance. The dewaterability of sludge increased with the hydrophobicity of the CS-DMRs, and the filter cake moisture content (FCMC) and specific resistance to filtration (SRF) could be reduced from 95.47% and 7.09 x 10¹² m/kg to 79.26% and 2.258 x 10¹² m/kg, resp., at a constant pressure of 0.05 MPa after conditioned by the starch-based flocculant with the highest hydrophobicity at its optimal dose. Moreover, due to their amphiphilic structures, CS-DMRs could closely interact with the neg. charged extracellular polymeric substances (EPS), efficiently compress the protein and polysaccharide in EPS, and release the bound water. A second-order polynomial model was proposed according to the phenomenol. theory to quant. analyze the effect of hydrophobicity in these starch-based flocculants on the sludge dewaterability. The structure-activity relationship was built, and the optimal dose and corresponding FCMC could be theor. estimated accordingly. The results were in good agreement with the exptl. results. The dewatering mechanisms were also discussed in detail on the basis of the changes in the FCMC, SRF, capillary suction time, properties of sludge flocs, compression coefficient, microstructures of sludge cakes, EPS fractions and components, and spatial distributions of the proteins and polysaccharides. In addition to charge neutralization, the hydrophobic association effects of CS-DMRs played an important role in the formation of drainage channels and net-like porous structures in the sludge cake to improve its permeability and filterability. This study thus provided a good understanding of the structural effects of the starch-based flocculants on the sludge dewaterability. The results are greatly beneficial to the fabrication and utilization of environment-friendly and high-performance natural polymeric conditioners for sludge treatment.

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., Formula: C7H15Br

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides. 90-59-5, formula is C7H4Br2O2, Name is 3,5-Dibromo-2-hydroxybenzaldehyde. Organic compounds having carbon bonded to bromine are called organic bromides. Computed Properties of 90-59-5.

Hu, Minggang;Song, Xinfeng;Wang, Fugui;Zhang, Wenzhi;Ma, Wenhui;Han, Fuzhong research published �Ring-opening polymerization of rac-lactide catalyzed by magnesium and zinc complexes supported by an NNO ligand� the research content is summarized as follows. Two magnesium and zinc complexes were synthesized from the reaction of magnesium chloride and zinc chloride with a tridentate NNO ligand in THF. The magnesium and zinc complexes display good catalytic performance for the ring-opening polymerization of rac-lactide in the presence of benzyl alc. and a polymer with narrower mol. weight distribution is obtained. The linear relation between monomer conversion and number average mol. weight implied that the complexes were capable of catalyzing the living/controlled ring-opening polymerization of rac-lactide. Kinetic studies indicated that the ring-opening polymerization of lactide catalyzed by the catalyst contains two linear stages. In these two stages, the polymerization follows first-order kinetics for the monomer concentration The first-order dependency of the catalyst concentration was observed in the first stage. Fractional dependency upon catalyst concentration was found in the second stage. The anal. of the end group structure of the polymer indicated that the benzoxy group and hydroxyl group are the end groups of the polymer. The study on the reactions between alcs. and the complexes implied that the complexes were stable in the presence of benzyl alc. Benzyl alc. was the initiator of the polymerization and the ring-opening polymerization of rac-lactide conformed to the monomer activated mechanism.

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., Computed Properties of 90-59-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary