<i>i</i>-PrI Acceleration of Negishi Cross-Coupling Reactions
作者:Marcel Kienle、Paul Knochel
DOI:10.1021/ol1007026
日期:2010.6.18
The Negishi cross-coupling of arylzinc reagents with various bromoanilines is accelerated by the presence of i-Prl (1 equiv) and furnished the expected biaryls within 5-12 min reaction time at 25 degrees C. Arylzinc reagents can also be cross-coupled under these conditions with a range of aryl bromides bearing an enolizable ester or acidic benzylic protons.
Negishi Cross-Couplings of Unsaturated Halides Bearing Relatively Acidic Hydrogen Atoms with Organozinc Reagents
作者:Georg Manolikakes、Matthias A. Schade、Carmen Muñoz Hernandez、Herbert Mayr、Paul Knochel
DOI:10.1021/ol8009013
日期:2008.7.3
A wide range of polyfunctional aryl, heteroaryl, alkyl, and benzylic zinc reagents were coupled with unsaturated halides bearing an acidic NH or OH function, using Pd(OAc)(2) (1 mol %) and S-Phos (2 mol %) as catalyst without the need of protecting groups.