Oxidative Coupling of 1-(2,6-Dichlorobenzoyl)pyrroles and -pyrazoles and Alkyl Acrylates by Palladium(II) Acetate
作者:Toshio Itahara、Kazukuni Kawasaki、Fumio Ouseto
DOI:10.1246/bcsj.57.3488
日期:1984.12
palladium acetate and alkyl acrylates gave the corresponding α-alkenyl-substituted pyrroles in good yields, while the reaction of 1-(2,6-dichlorobenzoyl)-2,5-dimethylpyrrole gave small amounts of β-alkenyl-substituted pyrroles. Under similar conditions, 1-(2,6-dichlorobenzoyl)pyrazole and 1-(2,6-dichlorobenzoyl)-3,5-dimethylpyrazole reacted with palladium acetate and alkyl acrylates to give the corresponding
1-(2,6-二氯苯甲酰基)-、3-乙酰基-1-(2,6-二氯苯甲酰基)-、1-(2,6-二氯苯甲酰基)-2-甲酰基-和1-(苯磺酰基)吡咯的处理与乙酸钯和丙烯酸烷基酯以良好的产率得到相应的α-烯基取代的吡咯,而1-(2,6-二氯苯甲酰基)-2,5-二甲基吡咯的反应得到少量的β-烯基取代的吡咯。在类似条件下,1-(2,6-二氯苯甲酰基)吡唑和1-(2,6-二氯苯甲酰基)-3,5-二甲基吡唑与乙酸钯和丙烯酸烷基酯反应,得到相应的4-烯基取代的吡唑。1-(2,6-二氯苯甲酰基)-4-甲基吡唑反应得到5-烯基取代的吡唑