AN EFFICIENT METHOD FOR PREPARING GEM-DIMETHYLCYCLOPLOPANES FROM GEM-DIBROMOCYCLOPROPANES

Abstract

Treatment of gem-dibromocyclopropanes (1) with a higher order organocuprate prepared from cuprous thiocyanate and methyllithium, followed by the addition of methyl iodide in situ, readily afforded dimethylcyclopropanes (2) in good to excellent yields as listed in Table I.