Three-component reaction of N′-(2-alkynylbenzylidene)hydrazide, α,β-unsaturated carbonyl compound, with bromine
作者:Hui Ren、Shengqing Ye、Fen Liu、Jie Wu
DOI:10.1016/j.tet.2010.08.052
日期:2010.10
different conditions for the three-component reaction of N′-(2-alkynylbenzylidene)hydrazide, α,β-unsaturated carbonyl compound, with bromine. 6-BromoH-pyrazolo[5,1-a]isoquinoline was obtained when the reaction was performed in NMP at 70 °C in the presence of DABCO as base, while 6-bromo-1,2,3,10b-tetrahydropyrazolo[5,1-a]isoquinoline was afforded when the reaction occurred in DMAc at 10 °C in the presence
N '-(2-炔基亚苄基)酰肼,α,β-不饱和羰基化合物与溴的三组分反应在不同条件下产生了不同的结果。当以DABCO为碱在70°C下于NMP中于NMP中进行反应时,获得了6-溴H-吡唑并[5,1- a ]异喹啉,而6-溴-1,2,3,10 b-四氢吡唑并已获得了6-溴H-吡唑并[5,1- a ]异喹啉。当反应在10 K的DMAc中以K 3 PO 4为碱存在时,提供[5,1- a ]异喹啉。