Rhodium-catalyzed oxidative alkynylation of acrylate esters with propargylic alcohols
作者:Takahiro Nishimura、Makoto Nagaosa、Tamio Hayashi
DOI:10.1016/j.tetlet.2010.11.120
日期:2011.4
Oxidative alkynylation of acrylate esters with propargylic alcohols giving conjugated enyne esters was realized by use of a diene–rhodium catalyst. Propargylic alcohols were found to be useful alkynylating reagents in the present reaction to produce alkynylrhodium species via carbon–carbon bond cleavage. An excess of the acrylate ester worked as a hydride acceptor to reproduce the active rhodium species
通过使用二烯-铑催化剂实现了丙烯酸酯与炔丙醇的氧化炔基化反应,生成共轭烯炔酯。发现炔丙醇在本反应中是有用的烷基化试剂,可通过碳-碳键裂解产生炔基铑。过量的丙烯酸酯用作氢化物受体以再生活性铑物质。