... (C) 1987 The Chemical Society of Japan New Possibilities in the Michael Reaction by the Use of Tin(II) Enolates Takeshi YURA, Nobuharu IWASAWA, and Teruaki MUKAIYAMA Department of Chemistry, Faculty of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113 The Michael addition reaction of tin(II) enolates with α,β- ... Page 4. 794 Chemistry Letters, 1987 ketones proceeds smoothly by the use of TMSCl as activator to give the corre- ...