Heterocyclic system. XI. Synthesis of 1H, 4H??pyrazolo [4, 3??b] pyrrolizine and 2H, 4H??pyrazolo [4, 3??b] pyrrolizine derivatives

S Massa, A Mai, M Artico…

Index: Massa; Mai; Artico; Corelli Journal of Heterocyclic Chemistry, 1990 , vol. 27, # 6 p. 1805 - 1808

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Abstract

Abstract 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

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