Boron tribromide as a reagent for anti-Markovnikov addition of HBr to cyclopropanes
作者:Matthew H. Gieuw、Shuming Chen、Zhihai Ke、K. N. Houk、Ying-Yeung Yeung
DOI:10.1039/d0sc02567d
日期:——
Although radical formation from a trialkylborane is well documented, the analogous reaction mode is unknown for trihaloboranes. We have discovered the generation of bromine radicals from boron tribromide and simple proton sources, such as water or tert-butanol, under open-flask conditions. Cyclopropanes bearing a variety of substituents were hydro- and deuterio-brominated to furnish anti-Markovnikov
Direct introduction of nitrogen and oxygen functionality with spatial control using copper catalysis
作者:James B. Shaum、David J. Fisher、Miranda M. Sroda、Luis Limon、Javier Read de Alaniz
DOI:10.1039/c8sc03288b
日期:——
containing compounds through a number of methods; however, direct introduction of N- and O-functionality remains challenging. Presented herein is a general method to allow for the simultaneous installation of N- and O-functionality to construct unexplored N–O heterocyclic and amino-alcohol scaffolds. This transformation uses earth abundant copper salts to facilitate the formation of a carbon-centered radical
METHOD FOR PRODUCING ORGANIC TELLURIUM COMPOUND AND METHOD FOR PRODUCING VINYL POLYMER
申请人:OTSUKA CHEMICAL CO., LTD
公开号:US20220009885A1
公开(公告)日:2022-01-13
Provided is a method for producing an organic tellurium compound that enables the production of an organic tellurium compound in high yield using metallic tellurium as a source material and produces less amount of side products. A method for producing an organic tellurium compound includes the steps of: (A) reacting metallic tellurium with a compound represented by a general formula (1) below; and (B) reacting a compound obtained by the step (A) with an organic halogen compound, the metallic tellurium having a copper content of less than 100 ppm,
M(R
1
)m Formula (1)
where R
1
represents an alkyl group having 1 to 8 carbon atoms, an aryl group or an aromatic heterocyclic group, M represents an alkali metal or an alkaline earth metal, m represents 1 when M is an alkali metal, and m represents 2 when M is an alkaline earth metal.
[EN] METHOD FOR PRODUCING ORGANIC TELLURIUM COMPOUND AND METHOD FOR PRODUCING VINYL POLYMER<br/>[FR] PROCÉDÉ DE PRODUCTION DE COMPOSÉ DE TELLURE ORGANIQUE, ET PROCÉDÉ DE PRODUCTION DE POLYMERE VINYLIQUE<br/>[JA] 有機テルル化合物の製造方法およびビニル重合体の製造方法