Abstract
The one-pot synthesis of cyclopropyl compounds from 1-alkynes has been achieved by direct cyclopropanation of a 1-alkenylzinc species upon treatment with iodomethylzinc and trapping of the cyclopropylzinc intermediate with allyl bromide in the presence of CuCN⋅2 LiCl (see reaction scheme). This method proceeds under mild conditions and in good yield.
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