Category: bromides-buliding-blocks

In 2018,Dubbu, Sateesh; Bardhan, Anirban; Chennaiah, Ande; Vankar, Yashwant D. published 《A Cascade of Prins Reaction and Pinacol-Type Rearrangement: Access to 2,3-Dideoxy-3C-Formyl β-C-Aryl/Alkyl Furanosides and 2-Deoxy-2C-Branched β-C-Aryl Furanoside》.European Journal of Organic Chemistry published the findings.Application of 13465-09-3 The information in the text is summarized as follows:

2,3-Dideoxy-3C-formyl β-C-aryl/alkyl furanosides were synthesized in a stereoselective manner through a cascade of Prins reaction and pinacol-type rearrangement of an -O-TBDPS protected homoallylic alc., derived from D-mannitol, and various carbonyl compounds Furthermore, this method was successfully applied to the synthesis of a fused-bicyclic β-C-aryl furanoside moiety and a 2,3-dideoxy-3C-Me β-C-aryl furanoside which are found in core structures of bioactive mols. Further, the strategy was extended to a silyl-Prins reaction for the synthesis of a 2-deoxy-2C-branched β-C-aryl furanoside. The experimental part of the paper was very detailed, including the reaction process of Indium(III) bromide(cas: 13465-09-3Application of 13465-09-3)

Indium(III) bromide(cas: 13465-09-3) is used as a catalyst to produce dithioacetals when unactivated alkynes react with thiols and fields such as optics and microelectronics that utilize semiconductor technology have wide uses for indium in high-performing solar cells.Application of 13465-09-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2017,Zhao, Huai-Bo; Hou, Zhong-Wei; Liu, Zhan-Jiang; Zhou, Ze-Feng; Song, Jinshuai; Xu, Hai-Chao published 《Amidinyl Radical Formation through Anodic N-H Bond Cleavage and Its Application in Aromatic C-H Bond Functionalization》.Angewandte Chemie, International Edition published the findings.Computed Properties of C6H5Br2N The information in the text is summarized as follows:

We report herein an atom-economical and sustainable approach to access amidinyl radical intermediates through the anodic cleavage of N-H bonds. The resulting nitrogen-centered radicals undergo cyclizations with (hetero)arenes, followed by rearomatization, to afford functionalized tetracyclic benzimidazoles, e.g., I (X-rays crystal structure shown), in a highly straightforward and efficient manner. This metal- and reagent-free C-H/N-H cross-coupling reaction exhibits a broad substrate scope and proceeds with high chemoselectivity. The experimental part of the paper was very detailed, including the reaction process of 3,5-Dibromoaniline(cas: 626-40-4Computed Properties of C6H5Br2N)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Large quantities of aliphatic amines are made synthetically. The most widely used industrial method is the reaction of alcohols with ammonia at a high temperature, catalyzed by metals or metal oxide catalysts (e.g., nickel or copper). Mixtures of primary, secondary, and tertiary amines are thereby produced.Computed Properties of C6H5Br2N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2017,Samvelyan, M. A.; Ghochikyan, T. V.; Grigoryan, S. V.; Tamazyan, R. A.; Aivazyan, A. G. published 《Alkylation of 1,2,4-triazole-3-thiols with haloalkanoic acid esters》.Russian Journal of Organic Chemistry published the findings.Formula: C4H7BrO2 The information in the text is summarized as follows:

Alkylation of 4,5-disubstituted 4H-1,2,4-triazole-3-thiols I [R = C6H5, (CH2)2OH, pyridin-3-yl, etc; R1 = C6H5, CH2=CHCH2] with Me chloroformate and Et chloroacetate chemoselectively afforded the corresponding S-alkyl derivatives, II (n = 0, 1; X = Et, Me), whereas the alkylation of 5-benzyl-4-phenyl-4H-1,2,4-triazole-3-thiol with methyl-3-bromopropanoate gave an inseparable mixture of Me 3-[(5-benzyl-4-phenyl-4H-1,2,4-triazol-3-yl)sulfanyl]propanoate and Me 3-(3-benzyl-4-phenyl-5-sulfanylidene-4,5-dihydro-1H-1,2,4-triazol-1-yl)propanoate products. Hydrazinolysis of S-(5-benzyl-4-phenyl-4H-1,2,4-triazol-3-yl) Me carbonothioate involved anomalous cleavage with formation of the initial 4,5-disubstituted 1,2,4-triazole I (R = benzyl; R1 = phenyl) and Me hydrazinecarboxylate. The experimental part of the paper was very detailed, including the reaction process of 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 2013,Vankadari, Srinivas Rao; Mandala, Devender; Pochampalli, Jalapathi; Tigulla, Parthasarathy; Valeru, Anil; Thampu, Rajakomuraiah published 《Synthesis, evaluation of antimicrobial activity, and molecular modeling of novel 2-((4-(2H-benzo[d] [1,2,3] triazol-2-yl)piperidin-1-yl)methyl)-5-substituted phenyl-1,3,4-oxadiazoles》.Medicinal Chemistry Research published the findings.COA of Formula: C8H7BrO2 The information in the text is summarized as follows:

A new series of 2-((4-(2H-benzo[d][1,2,3]triazol-2-yl)piperidin-1-yl)methyl)-5-substituted-phenyl-1,3,4-oxadiazoles I [Ar = Ph, 2-Br-Ph, 3-MeOPh, 3-NO2Ph, etc.] were synthesized by cyclization of 4-((benzotriazol-2-yl)-piperidin-1-yl)-acetic acid hydrazide with various substituted aromatic carboxylic acids in the presence of POCl3. The structures were characterized by spectral data. The representative examples were screened in vitro antibacterial activity and antifungal activity. The compounds showed significant antibacterial activity and showed moderate antifungal activity as that of standards, resp. The data were further compared with structure-based investigations using docking studies with the crystal structure of oxidoreductase (1XDQ) protein organism: Escherichia coli for antibacterial activity and oxidoreductase (3QLS) protein, organism: Candida albicans for antifungal activity. The score values estimated by genetic algorithm were found to have a good correlation with the exptl. inhibitory potencies. The experimental part of the paper was very detailed, including the reaction process of 3-Bromo-2-methylbenzoic acid(cas: 76006-33-2COA of Formula: C8H7BrO2)

3-Bromo-2-methylbenzoic acid(cas: 76006-33-2) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. COA of Formula: C8H7BrO2Some of these compounds are identical to man-made organobromine compounds, such as methyl bromide, bromoform, and bromophenols, but many others are entirely new moleclar entities, often possessing extraordinary and important biological properties.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2021,Biological & Pharmaceutical Bulletin included an article by Yoshioka, Hiroki; Tominaga, Sarah; Nishikawa, Mai; Shinohara, Yasuro; Nakao, Makoto; Yoshikawa, Masae; Maeda, Tohru; Miura, Nobuhiko. Category: bromides-buliding-blocks. The article was titled 《Different renal chronotoxicity of bromobenzene and its intermediate metabolites in mice》. The information in the text is summarized as follows:

Bromobenzene (BB) is known to pose a serious threat to human health. We previously demonstrated that BB showed chronotoxicity, i.e., daily fluctuations in the severity of hepatotoxicity induced in mice. Although BB showed mild nephrotoxicity, a daily fluctuation was not observed in this toxicity. This might be attributed to the fact that BB-induced chronotoxicity is observed only in the liver and not in the kidneys and that the damage caused by BB is prominent in the liver, masking the daily fluctuation in nephrotoxicity. To confirm these two possibilities, we examined the daily fluctuations in nephrotoxicity due to BB intermediate metabolites that target the kidneys: 3-bromophenol, bromohydroquinone, and 4-bromocatechol. Mice were injected with 3-bromophenol, bromohydroquinone, or 4-bromocatechol i.p. at six different time points in a day (zeitgeber time (ZT): ZT2, ZT6, ZT10, ZT14, ZT18, or ZT22). Mortality was monitored for 7 d post-injection. Mice were more sensitive to the acute toxicity of these metabolites around at ZT14 (dark-phase) exposure than around at ZT2 (light-phase) exposure. Furthermore, mice administered with a non-LD of 4-bromocatechol showed significant increases in the levels of plasma blood urea nitrogen and renal malondialdehyde at ZT14 exposure. Moreover, glutathione peroxidase-4, a ferroptosis indicator, was attenuated at ZT14 exposure. These results indicate the toxicity of BB metabolites was higher during the dark-phase exposure, and demonstrate the reason why the diurnal variation of nephrotoxicity by BB was not observed in our previous report is that renal damage was masked due to severe hepatic damage. In the experiment, the researchers used 2-Bromobenzene-1,4-diol(cas: 583-69-7Category: bromides-buliding-blocks)

2-Bromobenzene-1,4-diol(cas: 583-69-7) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Some of these compounds are identical to man-made organobromine compounds, such as methyl bromide, bromoform, and bromophenols, but many others are entirely new moleclar entities, often possessing extraordinary and important biological properties. Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Synthesis of Alkenylboronates from N-Tosylhydrazones through Palladium-Catalyzed Carbene Migratory Insertion》 was written by Ping, Yifan; Wang, Rui; Wang, Qianyue; Chang, Taiwei; Huo, Jingfeng; Lei, Ming; Wang, Jianbo. Formula: C7H5BrO2This research focused ontosylhydrazone palladium catalyzed borylation carbene migratory insertion; mol structure calculation palladium catalyzed borylation tosylhydrazone NBO. The article conveys some information:

The palladium-catalyzed oxidative borylation reaction of N-tosylhydrazones has been developed. The reaction features mild conditions, broad substrate scope, and good functional group tolerance. It thus represents a highly efficient and practical method for the synthesis of di-, tri-, and tetrasubstituted alkenylboronates from readily available N-tosylhydrazones. One-pot Suzuki coupling and other transformations highlight the synthetic utility of the approach. DFT calculations have revealed that palladium-carbene formation and subsequent boryl migratory insertion are the key steps in the catalytic cycle. The high stereoselectivity observed in the formation of trisubstituted alkenylboronates has been explained by distortion-interaction anal. and NBO anal. In the part of experimental materials, we found many familiar compounds, such as 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4Formula: C7H5BrO2)

Furthermore, the coupling of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4) with β-methallyl alcohol was catalyzed by Pd(OAc)2 in combination with P(t-Bu)3.Formula: C7H5BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Realizing Tunable White Light Emission in Lead-Free Indium(III) Bromine Hybrid Single Crystals through Antimony(III) Cation Doping》 was written by Li, Zhongyuan; Song, Gaomin; Li, Ye; Wang, Le; Zhou, Tianliang; Lin, Zheshuai; Xie, Rong-Jun. Safety of Indium(III) bromideThis research focused ontunable white light emission leadfree indium bromine hybrid crystal; antimony cation doping. The article conveys some information:

Low-dimensional metal halide hybrids (OIMHs) have recently been explored as single-component white-light emitters for use in solid-state lighting. However, it still remains challenging to realize tunable white-light emission in lead-free zero-dimensional (0D) hybrid system. Here, a combination strategy has been proposed through doping Sb3+ enabling and balancing multiple emission centers toward the multiband warm white light. We first synthesized a new lead-free 0D (C8NH12)6InBr9·H2O single crystal, in which isolated [InBr6]3- octahedral units are separated by large organic cations [C8NH12]+. (C8NH12)6InBr9·H2O exhibits dual-band emissions with one intense cyan emission and a weak red emission tail. The low-energy ultrabroadband red emission tail can be greatly enhanced by the Sb3+ doping. Exptl. data and first-principles calculations reveal that the original dominant cyan emission is originated from the organic cations [C8NH12]+ and that the broadband red emission is ascribed to self-trapped excitons in [In(Sb)Br6]3-. When the Sb concentration is 0.1%, a single-component warm white-light emission with a photoluminescence quantum efficiency of 23.36%, correlated color temperature of 3347 K, and a color rendering index up to 84 can be achieved. This work represents a significant step toward the realization of single-component white-light emissions in environmental-friendly, high-performance 0D metal halide light-emitting materials. After reading the article, we found that the author used Indium(III) bromide(cas: 13465-09-3Safety of Indium(III) bromide)

Indium(III) bromide(cas: 13465-09-3) is used in organic synthesis as a water tolerant Lewis acid. It efficiently catalyzes the three-component coupling of β-keto esters, aldehydes and urea (or thiourea) to afford the corresponding dihydropyrimidinones.Safety of Indium(III) bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Direct Trifluoromethoxylation without OCF3-Carrier through In Situ Generation of Fluorophosgene》 was written by Saiter, Jeremy; Guerin, Thomas; Donnard, Morgan; Panossian, Armen; Hanquet, Gilles; Leroux, Frederic R.. Quality Control of Benzyl 2-bromoacetateThis research focused ontrifluoromethoxy compound preparation; fluorophosgene aryl halide trifluoromethoxylation. The article conveys some information:

The method represented the preparation of a range of trifluoromethoxylated structures R-OCF3 [R = undecanyl, (CH2)2Ph, 4-BrC6H4CH2, etc.] with no use of an intermediate trifluoromethoxylating reagent, but in situ construction and use of the F3CO anion as a salt, avoiding the presence of a useless side-product resulting from activation of an OCF3 carrier. The results came from multiple reactions, including the reaction of Benzyl 2-bromoacetate(cas: 5437-45-6Quality Control of Benzyl 2-bromoacetate)

Benzyl 2-bromoacetate(cas: 5437-45-6) has been used in the alkylation of (-)-2,3-O-isopropylidene-D-threitol that afforded lipopeptide, 2-[(4R,5R)-5-({[(9H-fluoren-9-yl)methoxy]carbonylaminomethyl}-2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]acetic acid.Quality Control of Benzyl 2-bromoacetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Decarboxylative C(sp3)-O Cross-Coupling》 was published in Angewandte Chemie, International Edition in 2018. These research results belong to Mao, Runze; Balon, Jonathan; Hu, Xile. Application of 30752-31-9 The article mentions the following:

Alkyl aryl ethers are an important class of compounds in medicinal and agricultural chem. Catalytic C(sp3)-O cross-coupling of alkyl electrophiles with phenols is an unexplored disconnection strategy to the synthesis of alkyl aryl ethers, with the potential to overcome some of the major limitations of existing methods such as C(sp2)-O cross-coupling and SN2 reactions. Reported here is a tandem photoredox and copper catalysis to achieve decarboxylative C(sp3)-O coupling of alkyl N-hydroxyphthalimide (NHPI) esters with phenols under mild reaction conditions. This method was used to synthesize a diverse set of alkyl aryl ethers using readily available alkyl carboxylic acids, including many natural products and drug mols. Complementarity in scope and functional-group tolerance to existing methods was demonstrated. In the experimental materials used by the author, we found 1-Bromo-4-(cyclohexyloxy)benzene(cas: 30752-31-9Application of 30752-31-9)

1-Bromo-4-(cyclohexyloxy)benzene(cas: 30752-31-9) belongs to organobromine compounds.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. Application of 30752-31-9 The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《An Olefinic 1,2-Boryl-Migration Enabled by Radical Addition: Construction of gem-Bis(boryl)alkanes》 was published in Angewandte Chemie, International Edition in 2019. These research results belong to Zhao, Binlin; Li, Zexian; Wu, Yixiao; Wang, Yandong; Qian, Jiasheng; Yuan, Yu; Shi, Zhuangzhi. Product Details of 401-55-8 The article mentions the following:

A series of in situ formed alkenyl diboronate complexes from alkenyl Grignard reagents (com. available or prepared from alkenyl bromides and Mg) with B2Pin2 (bis(pinacolato)diboron) react with diverse alkyl halides by a Ru photocatalyst to give various gem-bis(boryl)alkanes. Alkyl radicals add efficiently to the alkenyl diboronate complexes, and the adduct radical anions undergo radical-polar crossover, specifically, a 1,2-boryl-anion shift from boron to the α-carbon sp2 center. This transformation shows good functional-group compatibility and can serve as a powerful synthetic tool for late-stage functionalization in complex compounds Measurements of the quantum yield reveal that a radical-chain mechanism is operative in which the alkenyl diboronates acts as reductive quencher for the excited state of the photocatalyst. The experimental process involved the reaction of Ethylbromofluoroacetate(cas: 401-55-8Product Details 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.Product Details of 401-55-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary