Pyridazines. Part 34: Retro-ene-assisted palladium-catalyzed synthesis of 4,5-disubstituted-3(2H)-pyridazinones
作者:Eddy Sotelo、Alberto Coelho、Enrique Raviña
DOI:10.1016/s0040-4039(03)01029-3
日期:2003.6
The efficient one-pot bis-functionalization of the 4,5-positions of the 3-pyridazinone ring has been performed using Suzuki. Sonogashira and Stille cross-coupling reactions assisted by a retro-ene fragmentation. This route allows access in a shorter synthetic sequence to several pharmacologically useful 3(2H)-pyridazinones. (C) 2003 Elsevier Science Ltd. All rights reserved.