An Efficient Method for Preparing gem-Dimethylcyclopropanes from gem-Dibromocyclopropanes

抄録

Reaction 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 regardless of the functional group in 1.