Abstract
Aryloxy ethynyl lithium species can be generated in diethyl ether and efficiently added to aliphatic and aromatic N-sulfinyl imines in THF, affording aryloxypropargyl sulfinamides in good yield, and in most cases high diastereoselectivity. The diastereoselectivity can be reversed by precomplexation of the N-sulfinyl imine with BF3·OEt2.
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