THE REACTION OF TRIMETHYLSTANNYLMETHYLLITHIUM WITH ELECTROPHILES
作者:Eigoro Murayama、Toshihiro Kikuchi、Kotaro Sasaki、Norio Sootome、Tadashi Sato
DOI:10.1246/cl.1984.1897
日期:1984.11.5
Trimethylstannylmethyllithium was found to be a versatile reagent for the preparation of 1-alkenes from carbonyl compounds, allyl alcohols from α-chloro ketones, and cyclopropanes from oxiranes.
Phase-vanishing (PV) method using perfluorohexanes as a screen phase was applied to cyclopropa nation reactions with CH2I2/Et2Zn and CH2I2/Et3Al. When Et3Al was used as a carbenoid generator, the reaction proceeded smoothly and desired cyclopropane derivatives were obtained in high yield. The PV cyclopropa nation took 2 or 3 days to complete, however, reduction of reaction time by a factor of 2-3 was also achieved by vigorous stirring after the bottom CH2I2 layer disappeared. (C) 2008 Elsevier B.V. All rights reserved.