New synthesis of 1,2-bismethylenecyclobutanes by [2+2] cycloaddition reaction of 1,1-diphenyl-4,4-bis(trifluoromethyl)-butatriene with electron-rich alkenes
作者:Hans Gotthardt、Rüdiger Jung
DOI:10.1016/s0040-4039(01)81399-x
日期:1984.1
The title compound 1 undergoes thermal [π2S+π2S] cycloadditionreactions with 1,1-dimethoxyethylene or enamines to produce 1,2-bismethylenecyclobutanes of type 3.