High chirality transfer in chiral selenimides via[2,3]sigmatropic rearrangement
Abstract
The imination of chiral cinnamyl 2-(1-dimethylaminoethyl)ferrocenyl selenides with [N-(toluene-p-sulfonyl)imino]-phenyliodinane and chloramine-T affords the corresponding chiral allylic amines via[2,3]sigmatropic rearrangement of the selenimide intermediates with up to 87% ee, highly diastereoselective imination of selenides and highly stereospecific [2,3]sigmatropic rearrangement being shown.