Halogen dance in pyrazole 1-oxides: synthesis of pyrazolo[3,4-c]quinoline 1-oxides
作者:Jørgen Eskildsen、Niels Østergaard、Per Vedsø、Mikael Begtrup
DOI:10.1016/s0040-4020(02)00858-x
日期:2002.9
The synthesis of a new series of 3-substituted pyrazolo[3,4-c]quinoline 1-oxides is presented. Regioselective bromine–magnesium exchange of 2-benzylated 3,4,5-tribromopyrazole 1-oxides and subsequent halogen dance of the resulting monometalated intermediates was used to synthesize fused pyrazoloquinoline 1-oxides.
介绍了一系列新的3-取代的吡唑并[3,4- c ]喹啉1-氧化物的合成。2-苄基化的3,4,5-三溴吡唑1-氧化物的区域选择性溴-镁交换以及随后的单金属化中间体的卤素舞被用于合成稠合的吡唑并喹啉1-氧化物。