Alternatives to [4+1] carbocyclic annulations

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1986

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Virginia Polytechnic Institute and State University

Abstract

6-Carboethoxybicyclo [3.3.0] oct-6-en-2-one has been prepared by the intramolecular [4+1] cyclopentene annulation method. This compound and its precursor, 6-vinyl-6-carboethoxybicyclo[3.1.0]hexan-2-one were attained as the necessary standards for the investigation of the course of intramolecular Michael addition-alkylation sequence of l-phenylsulfonyl-6-carboethoxyocta-5,7-dien-2-one.

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