描述了一种对 α,β-不饱和酮的合成有价值的独特类型的铂催化。在 PtCl 2存在下,(2-芳基乙炔基)三甲基硅烷与 H 2 O 在 30 °C 下反应,以中等至良好的收率得到 1,4-二芳基丁-3-en-2-酮。 (2-烷基乙炔基)三甲基硅烷可以通过改性Pt催化剂体系有效转化为相应的水合二聚产物。机理研究表明酰基铂中间体参与催化循环。
Chelation-Assisted Hydrative Dimerization of 1-Alkyne Forming α,β-Enones by an Rh(I) Catalyst
作者:Young Jun Park、Bong-Il Kwon、Jeong-Ae Ahn、Hyuk Lee、Chul-Ho Jun
DOI:10.1021/ja045789i
日期:2004.11.1
The intermolecular hydrative dimerization of 1-alkyne was developed through the chelation-assisted catalytic system with Rh(I)/2-amino-3-picoline. This novel transformation afforded branched and linear alpha,beta-enones directly from two 1-alkyne molecules and H2O. The results demonstrate that a branch/linear ratio can be controlled by the alkyl substituent of 1-alkyne.