Rhodium Catalyzed Transformation of 4-Pentynyl Cyclopropanes to Bicyclo[4.3.0]nonenones <i>via</i> Cleavage of Cyclopropane Ring

Abstract

Abstract By using [RhCl(CO)2]2 as a catalyst, bicyclo[4.3.0]-nonenones are prepared from 4-pentynyl cyclopropanes under CO atmosphere via cleavage of cyclopropane ring.