An Efficient and Convenient Method for the Preparation of α-Methylenated Ketones from Silyl Enol Ethers
作者:Masaji Hayashi、Teruaki Mukaiyama
DOI:10.1246/cl.1987.1283
日期:1987.7.5
In the presence of a catalytic amount of stannous halide, silyl enol ethers react with bromomethyl methyl ether to give the corresponding α-bromomethyl ketones, which are smoothly converted to α-methylenated ketones on the successive addition of tertiary amine by one-pot procedure. This method is successfully applied to a synthesis of sarkomycin intermediate.
在催化量的卤化亚锡存在下,甲硅烷基烯醇醚与溴甲基甲基醚反应生成相应的 α-溴甲基酮,通过一锅法连续加入叔胺,该酮可顺利转化为 α-亚甲基化酮。该方法成功应用于沙霉素中间体的合成。