Abstract
Reaction of 2-amino-3-bromotropone (I) with active methylene compound was examined. (I) underwent condensation with active methylene compounds through its Br and NH2 groups. Reaction with diethyl malonate and ethyl cyanoacetate resulted in condensation through its CH2 and ester groups to form 3-ethoxycarbonyl- and 3-cyano-1, 3-dihydrocyclohepta [b] pyrrole-2, 8-dione (XVI), while reaction with malononitrile resulted in condensation with its CH2 and CN groups to form 2-amino-3-cyanocyclohepta [b] pyrrol-8 (1H)-one (XXI). Reaction of (I) with diethyl methylmalonate gave 3-methyl-1, 3-dihydrocyclohepta [b] pyrrole-2, 8-dione (XXII).
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