Pyrrolo[1,4]diazepines, via thermolyse of carbonylazides, and [3,2,2]cyclazines, via Diels-Alder reaction of [f]indolizines, annelated to [1]benzothiophene
作者:Philippe Ohier、Adam Daïch、Bernard Decroix
DOI:10.1016/0040-4020(96)00828-9
日期:1996.10
acetic acid is described. Moreover, new [1]benzothieno[2,3(3,2)-f]indolizines were synthesized in one-pot from 2(3)-(2-formylpyrrol-1-ylmethyl)-[1]benzothiophene and with diethyl acetylenedicarboxylate (DEAD) they led regiospecifically to [3,2,2] cyclazines fused to a [1]benzothiophene ring by 1,3-dipolar cycloaddition reaction rather than Diels-Alder adducts.
描述了通过在乙酸中热解,容易地从相应的羰基叠氮化物容易地获得稠合的三环吡咯并[1,2-a] [1]苯并噻吩并[2,3-e] [1,4]二氮杂。此外,新的[1]苯并噻吩并[2,3(3,2)-f]吲哚并咪唑由2(3)-(2-甲酰基吡咯-1-基甲基)-[1]苯并噻吩与乙炔二羧酸二乙酯一锅合成(DEAD),他们通过1,3-偶极环加成反应而不是Diels-Alder加合物,将区域特异性地导致[3,2,2]环嗪与[1]苯并噻吩环稠合。