Heterocyclic system.<b>XI</b>. Synthesis of 1<i>H</i>,4<i>H</i>-pyrazolo[4,3-<i>b</i>]pyrrolizine and 2<i>H</i>,4<i>H</i>-pyrazolo[4,3-<i>b</i>]pyrrolizine derivatives
作者:Silvio Massa、Antonello Mai、Marino Artico、Federico Corelli
DOI:10.1002/jhet.5570270653
日期:1990.9
Cyclization of pyrrolidinocarboxamide derivatives of 1-phenyl-5-(1H-pyrrol-1-yl)-1H-pyrazole-4-carboxylic acid and 2-phenyl-3-(1H-pyrrol-1-yl)-1H-pyrazole-4-carboxylic acid afforded imminium salts which were transformed into the corresponding ketones. Further reduction of the latter compounds furnished the title derivatives.
1-苯基-5-(1 H-吡咯-1-基)-1 H-吡唑-4-羧酸和2-苯基-3-(1 H-吡咯-1-基)-1的吡咯烷基羧酰胺衍生物的环化H-吡唑-4-羧酸提供亚胺盐,将其转化为相应的酮。后一种化合物的进一步还原提供了标题衍生物。