Transition Metal-Catalyzed Hetero-[5 + 2] Cycloadditions of Cyclopropyl Imines and Alkynes: Dihydroazepines from Simple, Readily Available Starting Materials
作者:Paul A. Wender、Torben M. Pedersen、Marc J. C. Scanio
DOI:10.1021/ja0285013
日期:2002.12.1
The first example of a transitionmetal-catalyzed hetero-[5 + 2] cycloaddition reaction is described. Use of cyclopropyl imines as five-atom components, an alkyne as a two-carbon component, and a Rh(I) catalyst enables a new route to dihydroazepines. This new hetero-[5 + 2] cycloaddition works well with aldimines, ketimines, and with substitutedcyclopropanes and affords the desired dihydroazepines