Abstract

A new, general synthetic method for 6-membered carbocycles has been demonstrated which involves the stereocontrolled cyclization of γ,δ-unsaturated epoxides with methylaluminum bis(4-bromo-2,6-di-tert-butylphenoxide) (MABR) via epoxide rearrangement and subsequent intramolecular ene reaction. This strategy is quite useful in the stereoselective synthesis of the basic skeleton of various terpenes.

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