Pyridazines XVII: An Efficient Palladium-Catalyzed Cross-Coupling Reaction for the Synthesis of 5-Substituted 6-Phenyl-(2H)-pyridazin-3-ones
作者:Isabel Estevez
DOI:10.1055/s-1999-3567
日期:1999.9
Pyridazine derivatives. Part 38: Efficient Heck alkenylation at position 5 of the 6-phenyl-3(2H)-pyridazinone system
作者:Alberto Coelho、Eddy Sotelo、Héctor Novoa、Oswald M. Peeters、Norbert Blaton、Enrique Raviña
DOI:10.1016/j.tetlet.2004.03.005
日期:2004.4
Several 6-phenyl-3(2H)-pyridazinones bearing different alkenyl groups at position 5 have been prepared in the search for novel antiplatelet agents. The target compounds were synthesised by a palladium-catalysed Heck cross-coupling reaction. Variable amounts of 4-phenyl-6-substituted-2-phthalazinones were isolated as by-products during these experiments. The crucial issues for successful Heck coupling