Tag: 200-300

Divergent Synthesis of Indolenine and Indoline Ring Systems by Palladium-Catalyzed Asymmetric Dearomatization of Indoles was written by Gao, Dong;Jiao, Lei. And the article was included in Angewandte Chemie, International Edition in 2022.Recommanded Product: 85118-24-7 This article mentions the following:

A Pd-catalyzed intermol. asym. spiroannulation of 2,3-disubstituted indoles with internal alkynes was developed for the efficient construction of indoline structures with a C2-quaternary stereocenter. Stereospecific aza-semipinacol rearrangement of these indoline derivatives under acidic conditions afforded indolenine products bearing a C3-quaternary stereocenter, where the migrating group could be controlled by the reaction sequence. The asym. spiroannulation together with the subsequent aza-semipinacol rearrangement enabled a divergent access to dearomatized indole derivatives with either a C3- or a C2-quaternary stereocenter. In the experiment, the researchers used many compounds, for example, 2-Bromo-4-(trifluoromethyl)benzaldehyde (cas: 85118-24-7Recommanded Product: 85118-24-7).

2-Bromo-4-(trifluoromethyl)benzaldehyde (cas: 85118-24-7) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. 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.Recommanded Product: 85118-24-7

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Palladium(II) and platinum(II) complexes of ((2-pyridyl)pyrazol-1-ylmethyl)benzoic acids: Synthesis, Solid state characterisation and biological cytotoxicity was written by McKay, Aidan P.;Lo, Warrick K. C.;Preston, Dan;Giles, Gregory I.;Crowley, James D.;Barnsley, Jonathan E.;Gordon, Keith C.;McMorran, David A.. And the article was included in Inorganica Chimica Acta in 2016.COA of Formula: C8H7BrO2 This article mentions the following:

The new ligands 3-(3-(2-pyridyl)pyrazol-1-ylmethyl)benzoic acid (L2) and 5-(3-(2-pyridyl)pyrazol-1-ylmethyl)benzene 1,3-dicarboxylic acid (L3) are reported and the synthesis and characterization of [PdCl₂(L)] and [PtCl₂(L)] complexes of these and the previously reported 4-(3-(2-pyridyl)pyrazol-1-ylmethyl)benzoic acid (L1) are described. In the solid state, the square planar complexes assemble via hydrogen bonding interactions involving COOH and M-Cl groups as well as by various 锜?stacking interactions involving the aromatic rings on the ligands and, notably, the chelate rings. Hirshfeld surface anal. has been used to gain insight into the assembly of the mols. Preliminary studies of the biol. cytotoxicity of the [PtCl₂(L)] complexes against A549 and MDA-MB-231 cancer cell lines are reported. In the experiment, the researchers used many compounds, for example, 3-(Bromomethyl)benzoic acid (cas: 6515-58-8COA of Formula: C8H7BrO2).

3-(Bromomethyl)benzoic acid (cas: 6515-58-8) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. 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.COA of Formula: C8H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Bromination of 3-haloanilines with 2,4,4,6-tetrabromo-2,5-cyclohexadien-1-one was written by Markgraf, J. Hodge;Marshall, G. Thomas;Greeley, Michael A.. And the article was included in Chemistry & Industry (London, United Kingdom) in 1987.Name: 3,4-Dibromoaniline This article mentions the following:

Mixtures of dihaloanilines I, II, and III (R¹ = F, Cl, Br, iodo) were obtained from the resp. 3-R¹C₆H₄NH₂. In the experiment, the researchers used many compounds, for example, 3,4-Dibromoaniline (cas: 615-55-4Name: 3,4-Dibromoaniline).

3,4-Dibromoaniline (cas: 615-55-4) belongs to organobromine compounds. Most of the natural organobromine compounds are produced by marine organisms, and several brominated metabolites with antibacterial, antitumor, antiviral, and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.Name: 3,4-Dibromoaniline

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis of new N-benzylpiperidine derivatives as cholinesterase inhibitors with 灏?amyloid anti-aggregation properties and beneficial effects on memory in vivo was written by Wieckowska, Anna;Wieckowski, Krzysztof;Bajda, Marek;Brus, Boris;Salat, Kinga;Czerwinska, Paulina;Gobec, Stanislav;Filipek, Barbara;Malawska, Barbara. And the article was included in Bioorganic & Medicinal Chemistry in 2015.Reference of 954-81-4 This article mentions the following:

Due to the complex nature of Alzheimer’s disease, multi-target-directed ligand approaches are one of the most promising strategies in the search for effective treatments. Acetylcholinesterase, butyrylcholinesterase and 灏?amyloid are the predominant biol. targets in the search for new anti-Alzheimer’s agents. Our aim was to combine both anticholinesterase and 灏?amyloid anti-aggregation activities in one mol., and to determine the therapeutic potential in vivo. We designed and synthesized 28 new compounds as derivatives of donepezil that contain the N-benzylpiperidine moiety combined with the phthalimide or indole moieties. Most of these test compounds showed micromolar activities against cholinesterases and aggregation of 灏?amyloid, combined with pos. results in blood-brain barrier permeability assays. The most promising compound 23 (2-(8-(1-(3-chlorobenzyl)piperidin-4-ylamino)octyl)isoindoline-1,3-dione) is an inhibitor of butyrylcholinesterase (IC₅₀ = 0.72 娓璏) that has 灏?amyloid anti-aggregation activity (72.5% inhibition at 10 娓璏) and can cross the blood-brain barrier. Moreover, in an animal model of memory impairment induced by scopolamine, the activity of 23 was comparable to that of donepezil. The selected compound 23 is an excellent lead structure in the further search for new anti-Alzheimer’s agents. In the experiment, the researchers used many compounds, for example, N-(5-Bromopentyl)phthalimide (cas: 954-81-4Reference of 954-81-4).

N-(5-Bromopentyl)phthalimide (cas: 954-81-4) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon鑱砨romine bond is electrophilic in nature. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Reference of 954-81-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Regio- and Chemoselective C-H Chlorination/Bromination of Electron-Deficient Arenes by Weak Coordination and Study of Relative Directing-Group Abilities was written by Sun, Xiuyun;Shan, Gang;Sun, Yonghui;Rao, Yu. And the article was included in Angewandte Chemie, International Edition in 2013.Name: Ethyl (2-bromophenyl)acetate This article mentions the following:

A palladium(II)-catalyzed ortho-chlorination/bromination reaction was developed using electron-deficient arenes as substrates. A preliminary evaluation was conducted on the relative abilities of the directing groups. In the experiment, the researchers used many compounds, for example, Ethyl (2-bromophenyl)acetate (cas: 2178-24-7Name: Ethyl (2-bromophenyl)acetate).

Ethyl (2-bromophenyl)acetate (cas: 2178-24-7) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon閳ユ彽romine bond is electrophilic, i.e. alkyl bromides are alkylating agents. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Name: Ethyl (2-bromophenyl)acetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis of novel potential DNA cross-linking new antineoplastic alkylating agents was written by Maroju, Sreedhar;Kumar, P. Naveen;Maroju, Ravichander;Velupula, Ganapathy;Haq, Abdul;Prasad, T. Ravi. And the article was included in Journal of Applicable Chemistry (Lumami, India) in 2014.Application In Synthesis of 3,4-Dibromoaniline This article mentions the following:

Twenty novel potential DNA crosslinking new antineoplastic alkylating agents, oxazolidin-2-ones I [R¹ = H, Me, Br, F; R² = OMe, morpholino, pyrrolidino, 3-pyridyl, etc.; R³ = N(CH₂CH₂Cl)₂] were synthesized by the reaction I (R³ = NH₂) with 1,2-dichloroethane in the presence of triethylamine in methylene dichloride under reflux. In the experiment, the researchers used many compounds, for example, 3,4-Dibromoaniline (cas: 615-55-4Application In Synthesis of 3,4-Dibromoaniline).

3,4-Dibromoaniline (cas: 615-55-4) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. alpha-Bromoesters are employed in the Reformatsky reaction for the synthesis of beta-hydroxyesters. Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. Application In Synthesis of 3,4-Dibromoaniline

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Three-Dimensional Heterocycles by Iron-Catalyzed Ring-Closing Sulfoxide Imidation was written by Yu, Hao;Li, Zhen;Bolm, Carsten. And the article was included in Angewandte Chemie, International Edition in 2018.Name: 2-Bromo-4-(trifluoromethyl)benzaldehyde This article mentions the following:

A general and atom-economical method for the synthesis of cyclic sulfoximines by intramol. imidations of azido-containing sulfoxides using a com. available Fe^II phthalocyanine (Fe^IIPc) as catalyst was developed. The method conveys a broad functional group tolerance and the resulting three-dimensional heterocycles can be modified by cross-coupling reactions. In the experiment, the researchers used many compounds, for example, 2-Bromo-4-(trifluoromethyl)benzaldehyde (cas: 85118-24-7Name: 2-Bromo-4-(trifluoromethyl)benzaldehyde).

2-Bromo-4-(trifluoromethyl)benzaldehyde (cas: 85118-24-7) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon鑱砨romine bond is electrophilic in nature. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Name: 2-Bromo-4-(trifluoromethyl)benzaldehyde

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

QSPR modelling with the topological substructural molecular design approach: 灏?cyclodextrin complexation was written by Perez-Garrido, Alfonso;Helguera, Aliuska Morales;Cordeiro, M. Natalia D. S.;Escudero, Amalio Garrido. And the article was included in Journal of Pharmaceutical Sciences in 2009.Computed Properties of C8H7BrO2 This article mentions the following:

This study aims at developing a quant. structure-property relationship (QSPR) model for predicting complexation with 灏?cyclodextrins (灏?CD) based on a large variety of organic compounds Mol. descriptors were computed following the TOPol. Substructural Mol. DEsign (TOPS-MODE) approach and correlated with 灏?CD complex stability constants by linear multivariate data anal. This strategy afforded a final QSPR model that was able to explain around 86% of the variance in the exptl. activity, along with showing good internal cross-validation statistics, and also good predictivity on external data. Topol. substructural information influencing the complexation with 灏?CD was extracted from the QSPR model. This revealed that the major driving forces for complexation are hydrophobicity and van der Waals interactions. Therefore, the presence of hydrophobic groups (hydrocarbon chains, aryl groups, etc.) and voluminous species (Cl, Br, I, etc.) in the mols. renders easy their complexity with 灏?CDs. To our knowledge, this is the first time a correlation between TOPS-MODE descriptors and complexing abilities of 灏?CDs has been reported. 婕?2009 Wiley-Liss, Inc. and the American Pharmacists Association J Pharm Sci 98:4557-4576, 2009. In the experiment, the researchers used many compounds, for example, 3-Bromophenyl acetate (cas: 35065-86-2Computed Properties of C8H7BrO2).

3-Bromophenyl acetate (cas: 35065-86-2) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. alpha-Bromoesters are employed in the Reformatsky reaction for the synthesis of beta-hydroxyesters. When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.Computed Properties of C8H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Structural Modifications to Tetrahydropyridine-3-carboxylate Esters en Route to the Discovery of M₅-Preferring Muscarinic Receptor Orthosteric Antagonists was written by Zheng, Guangrong;Smith, Andrew M.;Huang, Xiaoqin;Subramanian, Karunai L.;Siripurapu, Kiran B.;Deaciuc, Agripina;Zhan, Chang-Guo;Dwoskin, Linda P.. And the article was included in Journal of Medicinal Chemistry in 2013.Related Products of 14425-64-0 This article mentions the following:

The M₅ muscarinic acetylcholine receptor is suggested to be a potential pharmacotherapeutic target for the treatment of drug abuse. We describe herein the discovery of a series of M₅-preferring orthosteric antagonists based on the scaffold of 1,2,5,6-tetrahydropyridine-3-carboxylic acid. Compound 56, the most selective compound in this series, possesses an 11-fold selectivity for the M₅ over M₁ receptor and shows little activity at M₂-M₄. This compound, although exhibiting modest affinity (K_i = 2.24 娓璏) for the [³H]N-methylscopolamine binding site on the M₅ receptor, is potent (IC₅₀ = 0.45 nM) in inhibiting oxotremorine-evoked [³H]DA release from rat striatal slices. Further, a homol. model of human M₅ receptor based on the crystal structure of the rat M₃ receptor was constructed, and docking studies of compounds 28 and 56 were performed in an attempt to understand the possible binding mode of these novel analogs to the receptor. In the experiment, the researchers used many compounds, for example, 1-(2-Bromoethyl)-4-methoxybenzene (cas: 14425-64-0Related Products of 14425-64-0).

1-(2-Bromoethyl)-4-methoxybenzene (cas: 14425-64-0) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon閳ユ彽romine bond is electrophilic, i.e. alkyl bromides are alkylating agents. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Related Products of 14425-64-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Bromination of 4,4′,4”-trisubstituted triphenylamines. Torsional control of electrophilic aromatic substitution was written by Kelley, William S.;Monack, Louise;Rogge, Peter T.;Schwartz, Robert N.;Varimbi, Suzanne P.;Walter, Robert I.. And the article was included in Justus Liebigs Annalen der Chemie in 1971.Recommanded Product: 615-55-4 This article mentions the following:

Bromination of (p-BrC6H4)3N, (p-MeC6H4)3N (I), and (p-MeOC6H4)3N (II) gave products with only one ortho-Br atom in each ring as determined by comparison of the NMR spectra with those of the appropriate 4-substituted 2-bromo- or 3-bromoanilines. D exchange in I and II took place in all 6 ortho positions. These reactions are interpreted as a result of a stepwise electrophilic substitution which occurs only when the aromatic ring undergoing reaction is rotated close to the fully activated conformation, in which it is coplanar with the three C-N bonds. The other two rings must be rotated far out of the plane to permit the ring undergoing substitution to attain this conformation. After bromination in one ortho position, the bulky Br atom prevents a return to the fully activated position whereas the smaller H or Cl do not. In the experiment, the researchers used many compounds, for example, 3,4-Dibromoaniline (cas: 615-55-4Recommanded Product: 615-55-4).

3,4-Dibromoaniline (cas: 615-55-4) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Recommanded Product: 615-55-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary