The intramolecular alkylation of several bromo-and epoxy-2-methylcyclopentenones, 18-23 and 33, are described. In all cases, except 33, alkylative cyclization occurs at the γ'position to the conjoint ring systems 25-31. The" blocked" bromide 33 (γ'geminal dimethyl substituent) cyclizes to the fused ring hydrindenones 35 and/or 34 depending upon conditions. Enolateanion generation from 3-ethyl-2-methyl-2-cyclopentenone (36) with ...
