Selective O-acylation of silyl enol ethers with acid halides mediated by a copper(I) salt
作者:Hajime Ito、Tomoko Ishizuka、Jun-ichi Tateiwa、Akira Hosomi
DOI:10.1016/s0040-4039(98)01334-3
日期:1998.8
A new selective synthetic method of enol esters (O-acylated products) from silyl enol ether and acid chloride in the presence of CuCl is described. This reaction proceeds smoothly in DMI (1,3-dimethyl-2-imidazolidinone) but not in a less polar solvent. The silicon-copper exchange reaction pathway is proposed for this transformation as in the cases of hydrosilane and alkynylsilane which were previously
描述了在CuCl存在下由甲硅烷基烯醇醚和酰氯选择性合成烯醇酯(O-酰化产物)的新方法。该反应在DMI(1,3-二甲基-2-咪唑啉酮)中平稳进行,但在极性较小的溶剂中则无法进行。如先前报道的氢硅烷和炔基硅烷的情况那样,提出了用于该转化的硅-铜交换反应路径。