Mn-Catalyzed Aromatic C–H Alkenylation with Terminal Alkynes
作者:Bingwei Zhou、Hui Chen、Congyang Wang
DOI:10.1021/ja311689k
日期:2013.1.30
The first manganese-catalyzed aromatic C-H alkenylation with terminal alkynes is described. The procedure features an operationally simple catalyst system containing commercially available MnBr(CO)(5) and dicyclohexylamine (Cy(2)NH). The reaction occurs readily in a highlychemo-, regio-, and stereoselective manner delivering anti-Markovnikov E-configured olefins in high yields. Experimental study
A method for attaching boronic acids to a macroporous polymer-supported 1,3-diol was developed. Chemical modifications of some polymer-bound arylboronic acids were realised using various reaction conditions. Transesterification gave new boronates in high purity while oxidative cleavage directly led to phenols. (C) 1999 Elsevier Science Ltd. All rights reserved.