Asymmetric induction in the allylic rearrangement of chiral amine oxide
Abstract
The [2,3]-sigmatropic rearrangement of (R)-NN-dimethyl-3-(1-phenyl-phenyl-trans-but-1-enyl)amine oxide to give (S)-O-trans-1-phenyl-but-2-enyl-NN-dimethylhydroxyl-amine was effected thermally with nearly complete transfer of chirality from tetramally carbon to trigonal carbon via a cyclic half-chair transition state conformation.