Convenient Synthesis of Ethyl Triethylsilyldiazoacetate and Stereoselective Preparation of Aliphatic Silylketene Acetals:<i>In situ</i>Formation of Triethylsilyl Perchlorate
作者:Craig S. Wilcox、Robert E. Babston
DOI:10.1055/s-1985-31393
日期:——
Experimental details are reported for the silylation of esters by a method based upon in situ preparation of triethylsilyl perchlorate. The preparation of ethyl triethylsilyldiazoacetate (5) in 99% yield from ethyl diazoacetate (3) is detailed. A preparative procedure for the stereoselective formation of a (Z)-O-silylketene acetal 2b from isopropyl propanoate (1) is described.
报告了通过原位制备三乙基
硅基
高氯酸盐的方法对
酯类进行
硅烷化的实验细节。详细介绍了从
重氮乙酸乙酯(3)制备三乙基
硅基
重氮乙酸乙酯(5)的方法,收率为 99%。描述了从
丙酸异丙酯(1)立体选择性地生成 (Z)-O
硅酮
缩醛 2b 的制备过程。