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.
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.
A process of coupling living polymers with gamma-hydroxy acid-lactones
申请人:PHILLIPS PETROLEUM COMPANY
公开号:EP0050832A2
公开(公告)日:1982-05-05
Lactones derived from gamma-hydroxy acids are employed as coupling agents for polymers derived from alkali metal-initiated polymerizations. These coupling agents provide effective coupling without formation of undesirable by-products.