An efficient approach to γ-alkylidene γ-butyrolactones: Application to the syntheses of pyridazinones and diazocinones
摘要:
The efficient phototransformation of a variety of spirodiones 3 to gamma-alkylidene gamma-butyrolactones 4 and their application to the syntheses of biologically useful pyridazinones 14 and diazocinones 15 are described. (C) 1998 Elsevier Science Ltd. All rights reserved.