... (20) Allen, CF; Kalm, MJ Organic Syntheses; Wiley: New York, (21) Carothers, W. H. J. Am. Chem. SOC. ... Paul G. Gassman* and Leonard M. Haberman' Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455 Received May 30, 1986 ... Notes J. Org. ...