Nickel/Photoredox‐Catalyzed Asymmetric Reductive Cross‐Coupling of Racemic α‐Chloro Esters with Aryl Iodides
作者:Haixing Guan、Qianwen Zhang、Patrick J. Walsh、Jianyou Mao
DOI:10.1002/anie.201914175
日期:2020.3.23
A unique nickel/organic photoredox co-catalyzed asymmetricreductive cross-coupling between α-chloro esters and aryl iodides is developed. This cross-electrophile coupling reaction employs an organic reductant (Hantzschester), whereas most reductive cross-coupling reactions use stoichiometric metals. A diverse array of valuable α-aryl esters is formed under these conditions with high enantioselectivities
[EN] TRANSITION-METAL-FREE N-ARYLATION OF TERTIARY AMINES USING ARYNES<br/>[FR] N-ARYLATION EXEMPTE DE MÉTAUX DE TRANSITION D'AMINES TERTIAIRES À L'AIDE D'ARYNES
申请人:COUNCIL SCIENT IND RES
公开号:WO2014207761A1
公开(公告)日:2014-12-31
The present invention relates to transition-metal-free process for the synthesis of tertiary arylamines comprises coupling reaction between arynes and N,N-dimethyl aniline compounds in presence of 18-crown-6, KF and THF.
Synthesis of Substituted Carbazoles, Indoles, and Dibenzofurans by Vinylic to Aryl Palladium Migration
作者:Jian Zhao、Richard C. Larock
DOI:10.1021/jo060727r
日期:2006.7.1
Substituted carbazoles, indoles, and dibenzofurans are readily prepared in moderate to excellent yields by the palladium-catalyzed cross-coupling of alkynes and appropriately substituted aryl iodides. This process proceeds by carbopalladation of the alkyne, heteroatom-directed vinylic to aryl palladium migration, and ring closure via intramolecular arylation or a Mizoroki−Heck reaction. Results from
Composition for film formation and material for insulating film formation
申请人:JSR CORPORATION
公开号:US20020172652A1
公开(公告)日:2002-11-21
A composition for film formation capable of forming a coating film excellent in low dielectric constant characteristics, cracking resistance, modulus of elasticity, and adhesion to substrates and useful as an interlayer insulating film material in semiconductor devices, etc. The composition for film formation contains (A) at least one member selected from an aromatic polyarylene and an aromatic poly (arylene ether), (B) a polyvinylsiloxane, and (C) an organic solvent.