Category: bromides-buliding-blocks

Li, Cai-Yi; Ma, Yue; Lei, Zhi-Wei; Hu, Xiang-Guo published their research in Organic Letters in 2021. The article was titled 《Glycosyl-Radical-Based Synthesis of C-Alkyl Glycosides via Photo-mediated Defluorinative gem-Difluoro-allylation》.COA of Formula: C13H17BrO9 The article contains the following contents:

We have developed a stereoselective, glycosyl radical-based method for the synthesis of C-alkyl glycosides via a photo-mediated defluorinative gem-difluoroallylation reaction. We demonstrate for the first time that glycosyl radicals, generated from glycosyl bromides, can readily participate in a photo-mediated radical polar crossover process, affording a diverse array of gem-difluoro-alkene containing C-glycosides. Notable features of this method include scalability, mild conditions, broad substrate scope, and suitability for the late-stage modification of complex mols. In the experiment, the researchers used many compounds, for example, (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3COA of Formula: C13H17BrO9)

(2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3) may be used for the synthesis of HMR1098-S-Glucuronide Methyl Ester, a new K-ATP-blocking agent being developed as a drug for prevention of sudden cardiac death.COA of Formula: C13H17BrO9

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhang, Yulong; He, Jun; Song, Peihong; Wang, You; Zhu, Shaolin published their research in CCS Chemistry in 2021. The article was titled 《Ligand-enabled NiH-catalyzed migratory hydroamination: chain walking as a strategy for regiodivergent/regioconvergent remote sp3C-H amination》.Product Details of 1530-32-1 The article contains the following contents:

A nondirected, remote sp3C-H amination process with predictable and switchable regioselectivity was reported. This reaction used a nickel hydride-catalyzed remote relay hydroamination strategy in which an aliphatic amino group was installed at a position far from the original C=C bond present in all unsaturated hydrocarbon substrates. Depending on the choice of ligand, either terminal or benzylic functionalization products were obtained with excellent levels of regioselectivity. It was shown that an alkyl bromide could also be used as an olefin precursor when using Mn0 as a reductant. The utility of this transformation was further highlighted by the regioconvergent migratory hydroamination of isomeric mixtures of olefins forming single isomers of value-added benzylic or linear amines. The experimental part of the paper was very detailed, including the reaction process of Ethyltriphenylphosphonium bromide(cas: 1530-32-1Product Details of 1530-32-1)

Ethyltriphenylphosphonium bromide(cas: 1530-32-1) is a phase transfer catalyst, used to accelerate the cure of phenolic-based epoxy resins, certain fluoroelastomer resins and thermosetting powder coatings. It is also used as catalysts in the synthesis of certain organic compounds and as a pharmaceutical intermediate.Product Details of 1530-32-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2016,Morera, Ludovica; Roatsch, Martin; Fuerst, Michael C. D.; Hoffmann, Inga; Senger, Johanna; Hau, Mirjam; Franz, Henriette; Schuele, Roland; Heinrich, Markus R.; Jung, Manfred published 《4-Biphenylalanine- and 3-Phenyltyrosine-Derived Hydroxamic Acids as Inhibitors of the JumonjiC-Domain-Containing Histone Demethylase KDM4A》.ChemMedChem published the findings.Formula: C4H7BrO2 The information in the text is summarized as follows:

Overexpression of the histone lysine demethylase KDM4A, which regulates H3K9 and H3K36 methylation states, has been related to the pathol. of several human cancers. We found that a previously reported hydroxamate-based histone deacetylase (HDAC) inhibitor (SW55) was also able to weakly inhibit this demethylase with an IC50 value of 25.4 μm. Herein we report the synthesis and biochem. evaluations, with two orthogonal in vitro assays, of a series of derivatives of this lead structure. With extensive chem. modifications on the lead structure, also by exploiting the versatility of the radical arylation with aryldiazonium salts, we were able to increase the potency of the derivatives against KDM4A to the low-micromolar range and, more importantly, to obtain demethylase selectivity with respect to HDACs. Cell-permeable derivatives clearly showed a demethylase-inhibition-dependent antiproliferative effect against HL-60 human promyelocytic leukemia cells. In the experiment, the researchers used Methyl 3-bromopropanoate(cas: 3395-91-3Formula: C4H7BrO2)

Methyl 3-bromopropanoate(cas: 3395-91-3) belongs to bromides. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents.Formula: C4H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2015,Sabitha, Gowravaram; Shankaraiah, Kontham; Sindhu, Kancherla; Latha, Bejawada Madhavi published 《Bismuth(III) Chloride Catalyzed Intramolecular Hetero-Diels-Alder Reaction: Access to cis-Fused Angular Hexahydrobenzo[c]acridines》.Synthesis published the findings.Product Details of 626-40-4 The information in the text is summarized as follows:

New polycyclic hexahydrobenzo[c]acridines were synthesized in excellent yields by intramol. [4+2]-cycloaddition reactions of aldimines derived from aromatic amines and 2-(4-methylpent-3-en-1-yl)benzaldehyde in acetonitrile in the presence of 10 mol% of bismuth(III) chloride. The reaction is highly diastereoselective, giving cis-fused benzoacridine derivatives preferentially. In addition to this study using 3,5-Dibromoaniline, there are many other studies that have used 3,5-Dibromoaniline(cas: 626-40-4Product Details of 626-40-4) was used in this study.

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Milder oxidation, using reagents such as NaOCl, can remove four hydrogen atoms from primary amines of the type RCH2NH2 to form nitriles (R―C≡N), and oxidation with reagents such as MnO2 can remove two hydrogen atoms from secondary amines (R2CH―NHR′) to form imines (R2C=NR′). Tertiary amines can be oxidized to enamines (R2C=CHNR2) by a variety of reagents.Product Details of 626-40-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Tang, Wei-Ke; Xu, Zhuo-Wei; Xu, Jun; Tang, Fei; Li, Xiao-Xuan; Dai, Jian-Jun; Xu, Hua-Jian; Feng, Yi-Si published an article in Organic Letters. The title of the article was 《Irradiation-Induced Cobaloxime-Catalyzed C-H Monofluoroalkylation of Styrenes at Room Temperature》.Application of 401-55-8 The author mentioned the following in the article:

A cobaloxime-catalyzed photochem. synthesis of allyl monofluorides from styrenes is described herein. This method is characterized by mild reaction conditions, low-cost catalyst, and broad substrate scope. Furthermore, this convenient method will provide a facile synthesis toward novel monofluoroalkylated natural product and pharmaceutical derivatives Mechanistic investigations indicate that a monofluoroalkyl radical is involved in the catalytic cycle. The experimental process involved the reaction of Ethylbromofluoroacetate(cas: 401-55-8Application of 401-55-8)

Ethylbromofluoroacetate(cas: 401-55-8) is a member of organofluorine compounds. Organofluorine compounds, which have carbon-fluorine bonds, show unique features such as high thermal and chemical stability, high surface activity, no light-absorbing ability, high pharmacological effect, and so on. Owing to their specific characters, they are indispensable chemicals for industry and our daily lives.Application of 401-55-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sun, Ze-Ying; Zhou, Sen; Yang, Kai; Guo, Minjie; Zhao, Wentao; Tang, Xiangyang; Wang, Guangwei published their research in Organic Letters on August 7 ,2020. The article was titled 《Tetrahydroxydiboron-Promoted Radical Addition of Alkynols》.Recommanded Product: 401-55-8 The article contains the following contents:

Tetrahydroxydiboron has previously been used as a borylation or reducing reagent in organic synthesis. Herein, we present a novel tetrahydroxydiboron-promoted radical addition of internal alkynes followed by intramol. oxidation of alc. through 1,5-hydrogen atom transfer. Preliminary mechanistic studies showed that the process might be initiated through N,N-dimethylformamide-assisted homolytic cleavage of tetrahydroxydiboron. This process provides a convenient synthesis of fluoroalkyl-substituted alkenes with a pendant aldehyde or ketone moiety. In the experimental materials used by the author, we found Ethylbromofluoroacetate(cas: 401-55-8Recommanded Product: 401-55-8)

Ethylbromofluoroacetate(cas: 401-55-8) is a member of organofluorine compounds. Organofluorine compounds, which have carbon-fluorine bonds, show unique features such as high thermal and chemical stability, high surface activity, no light-absorbing ability, high pharmacological effect, and so on. Owing to their specific characters, they are indispensable chemicals for industry and our daily lives.Recommanded Product: 401-55-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Liu, Xuan-Yu; Li, Xiang-Rui; Zhang, Chen; Chu, Xue-Qiang; Rao, Weidong; Loh, Teck-Peng; Shen, Zhi-Liang published their research in Organic Letters on August 2 ,2019. The article was titled 《Iron(0)-Mediated Reformatsky Reaction for the Synthesis of β-Hydroxyl Carbonyl Compounds》.Recommanded Product: 401-55-8 The article contains the following contents:

An efficient, economical, and practical Reformatskii reaction of α-halo carbonyl compounds with aldehydes/ketones by using cheap and com. iron(0) powder as reaction mediator is developed. The reactions proceeded effectively in the presence of a catalytic amount of iodine (20 mol %) to afford the synthetically useful β-hydroxyl carbonyl compounds in moderate to good yields.Ethylbromofluoroacetate(cas: 401-55-8Recommanded Product: 401-55-8) was used in this study.

Ethylbromofluoroacetate(cas: 401-55-8) is a member of organofluorine compounds. Organofluorine compounds, which have carbon-fluorine bonds, show unique features such as high thermal and chemical stability, high surface activity, no light-absorbing ability, high pharmacological effect, and so on. Owing to their specific characters, they are indispensable chemicals for industry and our daily lives.Recommanded Product: 401-55-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Xiang-ri; Lin, Rui-chao published an article in Zhongchengyao. The title of the article was 《GC-MS analysis of volatile oils of Lysimachia foenum-graecum Hance》.Recommanded Product: 3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl The author mentioned the following in the article:

The objective is comparing the naphtha components in holy basil medicinal materials at four different producing areas such as Yunnan, Sichuan, Guangxi, and Jiangsu Province. Using gas chromatograph-mass spectrum (GC-MS) to study chem. compositions of naphtha in holy basil medicinal materials at four different producing areas such as Yunnan, Sichuan, Guangxi and Jiangsu Province. Of the 28, 44, 28, and 61 kinds of components were separated and detected in holy basil produced in Yunnan, Sichuan, Guangxi and Jiangsu Province resp. and their contents in whole oil were 93.74%, 97.13%, 96.16%, and 99.18%, resp. The holy basil medicinal materials produced in these four different areas all contained large amounts of aromatic substances such as esters. They all contained such substances as normal Hexadecane, Heneicosane and 6,10,14-trimethyl-2-Pentadecanone but there were differences between the compositions of medicinal materials in different producing areas, especially the compositions of medicinal materials produced in Guangxi Province had rather large differences. The experimental process involved the reaction of 3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl(cas: 29102-67-8Recommanded Product: 3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl)

3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl(cas: 29102-67-8) 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. Recommanded Product: 3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Category: bromides-buliding-blocksOn June 5, 2020, Li, Ya-Wei; Zheng, Hong-Xing; Yang, Bo; Shan, Xiang-Huan; Qu, Jian-Ping; Kang, Yan-Biao published an article in Organic Letters. The article was 《tBuOK-Promoted Cyclization of Imines with Aryl Halides》. The article mentions the following:

A transition-metal-free indole synthesis using radical coupling of 2-halotoluenes and imines via the later-stage C-N bond construction was reported for the first time. It includes an aminyl radical generation by C-H cleaving addition of 2-halotoluenes to imines via the carbanion radical relay and an intramol. coupling of aryl halides with aminyl radicals. One standard condition can be used for all halides including F, Cl, Br, and I. No extra oxidant or transition metal is required. In the experiment, the researchers used 4-Bromo-1-(bromomethyl)-2-fluorobenzene(cas: 76283-09-5Category: bromides-buliding-blocks)

4-Bromo-1-(bromomethyl)-2-fluorobenzene(cas: 76283-09-5) belongs to organobromine compounds.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthetic Route of C4H6BrFO2On November 22, 2021 ,《Cobalt-Catalyzed Addition of Ethyl Bromofluoroacetate to Alkynes》 appeared in ChemistrySelect. The author of the article were Hu, Zhaoming; Ren, Jie; Chen, Zhizhi; Yin, Siyu; Wu, Fanhong; Liu, Chao; Wu, Zhuo; Wu, Jingjing. The article conveys some information:

A cobalt-catalyzed oxidative monofluoroalkylation of alkynes with Et bromofluoroacetate was reported. This method enabled direct and facile access to Et bromomonofluoroallyl acetate EtOC(O)CCHFR1C=CBrR2 [R1 = H, Me, n-Pr, n-Bu, Ph; R2 = n-Pr, Ph, 3-pyridyl, etc.] from abundant alkynes with excellent functional group compatibility. Moreover, this cobalt/ethyl bromofluoroacetate protocol could further create a series of radical monofluoroalkylation reactions of a wide array of substrates, offering a generic and complementary platform for the construction of diversified C-CFHCOOEt bonds. In the part of experimental materials, we found many familiar compounds, such as Ethylbromofluoroacetate(cas: 401-55-8Synthetic Route of C4H6BrFO2)

Ethylbromofluoroacetate(cas: 401-55-8) is a member of organofluorine compounds. Organofluorine compounds, which have carbon-fluorine bonds, show unique features such as high thermal and chemical stability, high surface activity, no light-absorbing ability, high pharmacological effect, and so on. Owing to their specific characters, they are indispensable chemicals for industry and our daily lives.Synthetic Route of C4H6BrFO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary