PtCl2-catalyzed rearrangement of methylenecyclopropanes

A Fürstner, C Aïssa

Index: Fuerstner, Alois; Aissa, Christophe Journal of the American Chemical Society, 2006 , vol. 128, # 19 p. 6306 - 6307

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Citation Number: 151

Abstract

Alkylidenecyclopropanes readily convert into cyclobutene derivatives on treatment with catalytic amounts of PtCl2. The reaction is strongly accelerated when performed under an atmosphere of CO (1 atm). The resulting cyclobutenes are isolated in good to excellent yields for substrates bearing aliphatic as well as aromatic substituents R on their olefinic site. If the substituent R, however, is a very electron-rich arene, the cyclobutenes initially ...