A new synthetic protocol for the preparation of 3-aryl-3-methoxycarbonyl cyclopropenes with an unsubstituted double bond has been developed that allowed for expanded substrate scope and improved product yields. The method involves Rh(II)-catalyzed transfer of carbenoids generated from unpurified aryldiazoesters, followed by desilylation, and is compatible with a wide range of aryldiazoesters. The employed continuous extraction of hardly soluble crude diazoesters helps avoid laborious and often cost-prohibitive isolation and purification of sensitive diazoester precursors.