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2-Chloro-3-ethoxycarbonylcyclohepta[b]-pyrrole reacts with the carbanions derived from active methylene compounds to give substitution products and/or addition products depending on the reaction conditions

bulletin of the chemical society of japan

Studies on Heterocyclic Analogs of Azulenes. IlI. The Reactions of 2-Chloro-3-ethoxycarbonylcyclohepta[6]pyrroIe with the Carb-anions Derived from Active Methylene Compounds