Author: Jessica.F

《Palladium-Catalyzed Intermolecular trans-Selective Carbofunctionalization of Internal Alkynes to Highly Functionalized Alkenes》 was written by Lv, Weiwei; Liu, Shihan; Chen, Yanhui; Wen, Si; Lan, Yu; Cheng, Guolin. Formula: C9H11Br And the article was included in ACS Catalysis in 2020. The article conveys some information:

A palladium/DPEphos-catalyzed intermol. trans-selective carbofunctionalization of internal alkynes was established herein. This method proceeds through a formal anti-carbopalladation, forming trans-alkenyl palladium species, which was trapped by aryl boronic acids to provide all-carbon tetrasubstituted alkenes in 32-92% yields. The trans-selective arylsilylation/remote C-H silylation and hydroarylation/remote C-H borylation of internal alkynes were also achieved by using hexamethyldisilane and bis(pinacolato)diboron as trapping reagents, resp. The reaction features good regio- and stereoselectivity and high functional group tolerance. A preliminary mechanistic study and DFT calculations show that a cis to trans isomerization of cis-alkenyl palladium species was involved in this transformation. In addition to this study using 1-Bromo-2-isopropylbenzene, there are many other studies that have used 1-Bromo-2-isopropylbenzene(cas: 7073-94-1Formula: C9H11Br) was used in this study.

1-Bromo-2-isopropylbenzene(cas: 7073-94-1) 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. Formula: C9H11Br

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sole, Roberto; Buranello, Chiara; Bardella, Noemi; Di Michele, Alessandro; Paganelli, Stefano; Beghetto, Valentina published their research in Catalysts in 2021. The article was titled 《Recyclable Ir Nanoparticles for the Catalytic Hydrogenation of Biomass-Derived Carbonyl Compounds》.Recommanded Product: Ethyl 5-bromovalerate The article contains the following contents:

The valorisation of biomass-derived platform chems. via catalytic hydrogenation is an eco-friendly tool which allows authors to recover bio-based building blocks and produce fine chems. with high industrial appeal. In the present study, a novel surfactant-type triazolyl-thioether ligand was prepared, showing excellent catalytic activity in the presence of bis(1,5-cyclooctadiene)diiridium(I) dichloride [Ir(COD)Cl]2 for the hydrogenation of furfural, cinnamaldehyde, levulinic acid, 5-hydroxymethylfurfural, vanillin, and citral. Easy recovery by liquid/liquid extraction allowed authors to recover the catalyst, which could then be efficiently recycled up to 11 times for the hydrogenation of furfural. In-depth anal. revealed the formation of spherical structures with metal nanoparticles as big as 2-6 nm surrounded by the anionic ligand, preventing iridium nanoparticle degradation In the experiment, the researchers used Ethyl 5-bromovalerate(cas: 14660-52-7Recommanded Product: Ethyl 5-bromovalerate)

Ethyl 5-bromovalerate(cas: 14660-52-7) 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.Recommanded Product: Ethyl 5-bromovalerate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wood, Devin P.; Guan, Weiyang; Lin, Song published their research in Synthesis in 2021. The article was titled 《Titanium and Cobalt Bimetallic Radical Redox Relay for the Isomerization of N-Bz Aziridines to Allylic Amides》.Computed Properties of C20H20BrP The article contains the following contents:

Herein, a bimetallic radical redox-relay strategy is employed to generate alkyl radicals under mild conditions with titanium(III) catalysis and terminated via hydrogen atom transfer with cobalt(II) catalysis to enact base-free isomerizations of N-Bz aziridines I [R1R3 = (CH2)3, R2 = H; R1R2 = CH2NTsCH2CH2, R3 = H; R1 = MeO2C(CH2)7, R2 = R3 = H; etc] to N-Bz allylic amides II. This reaction provides an alternative strategy for the synthesis of allylic amides from alkenes via a three-step sequence to accomplish a formal transpositional allylic amination. The experimental part of the paper was very detailed, including the reaction process of Ethyltriphenylphosphonium bromide(cas: 1530-32-1Computed Properties of C20H20BrP)

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.Computed Properties of C20H20BrP

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Yang, Dong; Chen, Jiaming; Huang, Yanping; Pan, Huiquan; Shi, Jingqi; Zhang, Yingyue; Wang, Fang; Li, Ziyuan published their research in ACS Catalysis in 2021. The article was titled 《Room-temperature Formal Aza-Wacker Cyclization through Synergistic Copper/TEMPO-catalyzed Radical Relay》.Recommanded Product: 2623-87-2 The article contains the following contents:

A formal aza-Wacker cyclization of alkenylated carbamates or amides through a synergistic Cu/TEMPO-catalyzed radical relay pathway using N-fluorobenzenesulfonimide (NFSI) as an external oxidant afforded oxazolidinones, pyrrolidones I [R= Cl, Br, F, R1 = Me, Et, n-Pr; R2 = H, Me, Et; R1R2 = cyclohex-1-en-1-yl; X = CH2, O] and isoindolinones II [R3 = Ph, 4-MeOC6H4, OBn, etc.] under mild conditions. In this efficient cyclization of alkenylated carbamates or amides at room temperature, the imidyl nitrogen-centered radical (NCR) generated by NFSI induced carbamate or amido NCR from the substrate via N-H homolysis to realize the radical relay process, which was supported by results of control experiments In the experiment, the researchers used 4-Bromobutanoic acid(cas: 2623-87-2Recommanded Product: 2623-87-2)

4-Bromobutanoic acid(cas: 2623-87-2) belongs to carboxylic acids. The chief chemical characteristic of the carboxylic acids is their acidity. They are generally more acidic than other organic compounds containing hydroxyl groups but are generally weaker than the familiar mineral acids (e.g., hydrochloric acid, HCl, sulfuric acid, H2SO4, etc.).Recommanded Product: 2623-87-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

He, Xinxin; Wang, Xinyan; Tse, Ying-Lung Steve; Ke, Zhihai; Yeung, Ying-Yeung published their research in ACS Catalysis in 2021. The article was titled 《Bis-selenonium Cations as Bidentate Chalcogen Bond Donors in Catalysis》.Quality Control of 5-Bromobenzo[d][1,3]dioxole The article contains the following contents:

Hydrolytically stable bidentate Lewis acid catalysts derived from selenonium dicationic centers were developed. The bis-selenonium catalysts were employed in the activation of imine and carbonyl groups in various transformations with good yields and selectivity. Lewis acidity of the bis-selenonium salts was found to be stronger than that of the monoselenonium systems, attributed to the synergistic effect of the two cationic selenonium centers. In addition, the bis-selenonium catalysts were not inhibited by strong bases or moisture. In addition to this study using 5-Bromobenzo[d][1,3]dioxole, there are many other studies that have used 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4Quality Control of 5-Bromobenzo[d][1,3]dioxole) was used in this study.

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.Quality Control of 5-Bromobenzo[d][1,3]dioxole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Du, Juan; Wang, Xing; Wang, Hongling; Wei, Jinhu; Huang, Xuan; Song, Jun; Zhang, Junmin published their research in Organic Letters in 2021. The article was titled 《Photoinduced Palladium-Catalyzed Intermolecular Radical Cascade Cyclization of N-Arylacrylamides with Unactivated Alkyl Bromides》.Formula: C4H7Br The article contains the following contents:

A mild visible-light-induced Pd-catalyzed intermol. radical cascade reaction of N-arylacrylamides with unactivated alkyl bromides was disclosed. Photoexcited Pd complexes transfer a single electron in this protocol, and hybrid alkyl Pd-radical species were involved as the key reaction intermediates. Sophisticated bioactive oxindole derivatives bearing various substituents and substitution patterns were efficiently afforded through this approach. In the experiment, the researchers used many compounds, for example, (Bromomethyl)cyclopropane(cas: 7051-34-5Formula: C4H7Br)

(Bromomethyl)cyclopropane(cas: 7051-34-5) is used as a synthetic building block for the introduction of the cyclopropylmethyl group. It was also used in the synthesis of 1,4-dienes via iron-catalyzed cross-coupling with alkenyl Grignard reagents.Formula: C4H7Br

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Xie, Xiu-Ying; Jiang, Wei-Tao; Xiao, Bin published their research in Synthesis in 2021. The article was titled 《Alkyl Carbagermatrane Enabled Synthesis of Seven-Membered Carbocycle-Fused Aromatics through Catellani Strategy》.Related Products of 17696-11-6 The article contains the following contents:

Synthesis of seven-membered carbocycle-fused aromatics was realized by Catellani reaction using terminally brominated alkyl carbagermatranes through intermol. cyclization manner. Various functional groups were well tolerated and this transformation was also expanded to the synthesis of carbocycles of other size. The utility of the above method was demonstrated by modification of natural product derivatives and synthesis of bioactive mols. The experimental process involved the reaction of 8-Bromooctanoic acid(cas: 17696-11-6Related Products of 17696-11-6)

8-Bromooctanoic acid(cas: 17696-11-6) acid is used in the synthesis of 8-(N-Methyl-4,4′-bipyridinyl)- octanoic acid. 8-Mercaptooctanoic acid was prepared from 8-bromooctanoic acid. And 8-Bromooctanoic Acid is a useful compound for sonodynamic therapy.Related Products of 17696-11-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ning, Shulin; Zheng, Lianyou; Bai, Ya; Wang, Shutao; Wang, Siyu; Shi, Lingling; Gao, Qiansong; Che, Xin; Zhang, Zhuoqi; Xiang, Jinbao published their research in Tetrahedron in 2021. The article was titled 《Highly selective electroreductive linear dimerization of electron-deficient vinylarenes》.Application of 1530-32-1 The article contains the following contents:

A direct electroreductive dimerization of electron-deficient vinylarenes R1R2C:CR3R4 (R1 = Ph, 4-NCC6H4, pyridin-4-yl, etc., R2 = R3 = R4 = H; R1 = 4-EtO2CC6H4, R2 = Me, Ph, R3 = R4 = H; R1 = 4-MeO2CC6H4, R2 = H, R3 = Me, R4 = H, Me; etc.) for the synthesis of 1,4-diarylbutanes R1R2CH-CR3R4-CR3R4-CHR1R2 as been developed using a simple undivided cell with inexpensive carbon electrodes at room temperature The control and deuterium-labeling experiments of electroreductive dimerization suggest that the hydrogen source comes from the solvent CH3CN. This protocol provides a mild and efficient route for the construction of C-C bond in moderate to good yields with high regioselectivity and broad substrate scope. In the experiment, the researchers used Ethyltriphenylphosphonium bromide(cas: 1530-32-1Application 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.Application of 1530-32-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Yan; Nie, Wan; Chang, Zhe; Wang, Jia-Wang; Lu, Xi; Fu, Yao published an article in 2021. The article was titled 《Cobalt-catalysed enantioselective C(sp3)-C(sp3) coupling》, and you may find the article in Nature Catalysis.Synthetic Route of C4H7Br The information in the text is summarized as follows:

Enantioselective C(sp3)-C(sp3) coupling substantially impacts organic synthesis but remains challenging. Cobalt has played an important role in the development of homogeneous organometallic catalysis, but there are few examples of its use in asym. cross-coupling. Here, a cobalt-catalyzed enantioselective C(sp3)-C(sp3) coupling reaction, namely, alkene hydroalkylation, to access chiral fluoroalkanes was reported. This reaction represents a catalyst-controlled enantioselective coupling mode in which a tailor-made auxiliary is unnecessary; via this reaction, an aliphatic C-F stereogenic center can be introduced at the desired position in an alkyl chain. In the experiment, the researchers used many compounds, for example, (Bromomethyl)cyclopropane(cas: 7051-34-5Synthetic Route of C4H7Br)

(Bromomethyl)cyclopropane(cas: 7051-34-5) is used as a synthetic building block for the introduction of the cyclopropylmethyl group. It was also used in the synthesis of 1,4-dienes via iron-catalyzed cross-coupling with alkenyl Grignard reagents.Synthetic Route of C4H7Br

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Das, Siuli; Mondal, Rakesh; Chakraborty, Gargi; Guin, Amit Kumar; Das, Abhishek; Paul, Nanda D. published an article in 2021. The article was titled 《Zinc Stabilized Azo-anion Radical in Dehydrogenative Synthesis of N-Heterocycles. An Exclusively Ligand Centered Redox Controlled Approach》, and you may find the article in ACS Catalysis.Synthetic Route of C7H5BrO The information in the text is summarized as follows:

Herein an exclusively ligand-centered redox controlled approach for the dehydrogenation of a variety of N-heterocycles such as 1,2,3,4-tetrahydro-2-methylquinoline, 1,2,3,4-tetrahydro-isoquinoline, indoline, 2-phenyl-2,3-dihydro-1H-benzoimidazole, 2,3-dihydro-2-phenylquinazolin-4(1H)-ones I (R = H, 2-Br, 4-Cl, 4-Me, etc.; X = C=O) and 1,2,3,4-tetrahydro-2-phenylquinazolines I (X = CH2) using a Zn(II)-stabilized azo-anion radical complexes II (R1 = H, Cl) as the catalyst was reported. A simple, easy to prepare and bench stable Zn(II)-complex III (R1 = Cl) featuring the tridentate arylazo pincer, 2-((4-chlorophenyl)diazenyl)-1,10-phenanthroline, in the presence of zinc-dust, undergoes reduction of azo-anion radical species II (R1 = Cl) which efficiently dehydrogenates various saturated N-heterocycles such as 1,2,3,4-tetrahydro-2-methylquinoline, 1,2,3,4-tetrahydro-isoquinoline, indoline, 2-phenyl-2,3-dihydro-1H-benzoimidazole, 2,3-dihydro-2-phenylquinazolin-4(1H)-ones I (X = C=O) and 1,2,3,4-tetrahydro-2-phenylquinazolines I (X = CH2) under air. The catalyst has further been found to be compatible with the cascade synthesis of these N-heterocycles IV (R2 = n-Bu, Ph, thiophen-2-yl, etc.; R3 = H, Me; R4 = H, Br, Me), V (R5 = H, Cl) and VI (R6 = H, Cl; R7 = H, Me; R8 = Ph, 2-fluorophenyl, pyridin-2-yl, etc.) via dehydrogenative coupling of alcs. R2CH2OH and 2-NH2-4-R6-C6H3CH2OH with other suitable coupling partners under air. Mechanistic investigation reveals that the dehydrogenation reactions proceed via a one-electron hydrogen atom transfer (HAT) pathway where the zinc-stabilized azo-anion radical ligand abstracts the hydrogen atom from the organic substrate(s), and the whole catalytic cycle proceeds via the exclusive involvement of the ligand-centered redox events where the zinc acts only as the template.o-Bromobenzaldehyde(cas: 6630-33-7Synthetic Route of C7H5BrO) was used in this study.

o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Synthetic Route of C7H5BrOSynthetic applications of o-Bromobenzaldehyde include: synthesis of aza-fused polycyclic quinolines through copper-catalyzed cascade reaction, preparation of 1-substituted indazoles by CuI-catalyzed coupling with N-aryl hydrazides.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary