Michael additions of carbonucleophiles to butenone catalyzed by the non-hydride [Ru(O2CH)(CO)2(PPh3)]2 complex
摘要:
[Ru(mu-O2CH)(CO)(2)(PPh3)](2) in acetonitrile is an efficient catalyst precursor for the Michael addition of soft carbonucleophiles to butenone. The utilization of terminal alkynes as donors makes possible the selective formation of gamma,delta-ynones. (C) 1999 Elsevier Science Ltd. All rights reserved.
Conjugate addition of B-1-alkynyl-9-borabicyclo[3.3.1]-nonanes to .alpha.,.beta.-unsaturated ketones. A convenient synthesis of .gamma.,.delta.-acetylenic ketones
作者:James A. Sinclair、Gary A. Molander、Herbert C. Brown