Phosphine-cataiyzed [3+2] cycloaddition reactions of substituted 2-alkynoates or 2,3-allenoates with electron-deficient olefins and imines

摘要

In the presence of a catalytic amount of tributylphosphine, substituted 2-alkynoates or 2,3-allenoates reacted with electron-deficient olefins and imines at room temperature to afford the [3+2] cycloaddition products in moderate to good yields. (C) 1998 Elsevier Science Ltd. All rights reserved. [References: 15]