Base-free oxidative homocoupling of arylboronic esters
摘要:
Base-free oxidative homocoupling reaction of arylboronic esters has been found to proceed using a catalytic amount of a palladium-1,3-bis(diphenylphosphino)propane (DPPP) complex under an oxygen atmosphere, affording a variety of biaryls in modest to excellent yields. Even arylboronic esters bearing a base-sensitive functional group are applicable to the reaction. (C) 2003 Elsevier Science Ltd. All rights reserved.
Generation of Organolithium Compounds bearing Super Silyl Ester and their Application to Matteson Rearrangement
作者:Susumu Oda、Hisashi Yamamoto
DOI:10.1002/anie.201304225
日期:2013.7.29
It's super‐silyl‐fragilithyl‐ester‐aryl‐docious: The super silylgroup is a strong protecting group for carboxylic acids and provides a method for direct lithiation that is compatible with the ester moiety. Organolithium compounds bearing a super silyl ester react with a variety of electrophiles in high yields (see scheme). The reaction of lithiated super silyl chloroacetate with a boron compound gives
Base-free oxidative homocoupling reaction of arylboronic esters has been found to proceed using a catalytic amount of a palladium-1,3-bis(diphenylphosphino)propane (DPPP) complex under an oxygen atmosphere, affording a variety of biaryls in modest to excellent yields. Even arylboronic esters bearing a base-sensitive functional group are applicable to the reaction. (C) 2003 Elsevier Science Ltd. All rights reserved.
Copper(<scp>i</scp>)-catalyzed amidation reaction of organoboronic esters and isocyanates
作者:Tedrick Thomas Salim Lew、Diane Shu Wen Lim、Yugen Zhang
DOI:10.1039/c5gc01374g
日期:——
A simple and efficient methodology for the preparation of amides from easily available organoboronic esters and isocyanates has been accomplished using ligand-free copper(I) catalyst. The reaction system demonstrated broad substrate...