Stereospecific Cyclopropanation Reactions of Stannyl-Substituted Acetals with Alkenes via <i>γ</i>-Elimination of Tin
作者:Masanobu Sugawara、Jun-ichi Yoshida
DOI:10.1055/s-1998-1896
日期:1998.10
The reactions of stannyl substituted acetals with olefins resulted in the elimination of both the triorganostannyl group and the alkoxy group on the same carbon, and the production of the corresponding alkoxycyclopropanes in good yields. The stereospecificity of the present reaction suggests that γ-elimination of tin is very fast.
diethoxymethyltributyltin affords a large variety of new α-stannylacetals, which are expected to have a high potential for selective organic synthesis when they contain labile or chiral alkoxy groups. The α-stannylacetals can be converted into the corresponding substituted α-stannyl-ethers by treatment with organoaluminium halides or by use of an acetyl chloride/Grignardreagent sequence. The study has concentrated