A Department of Organic Chemistry, University of Melbourne, Parkville, Vic. 3052. Present address: Division of Applied Organic Chemistry, CSIRO, PO Box 4331, Melbourne, Vic. 3001. To whom inquiries should be addressed. ... Abstract 3-Vinylindene, 34sopropenylindene and 2-methyl-3-vinylindene have been prepared by dehydration of suitable carbinols. In each case the vinylindene is in equilibrium with the isomeric alkylideneindene.
