Chirality Transfer from Nitrogen to Carbon in the [2,3]-Meisenheimer Rearrangement
作者:Jonathan Buston、Iain Coldham、Keith Mulholland
DOI:10.1055/s-1997-768
日期:1997.3
Oxidation of chiral, camphidin-based allylic tertiary amines gives rise to chiral tertiary amine-N-oxides, which undergo the [2,3]-Meisenheimer rearrangement with high levels of stereoselectivity. Reductive N,O-bond cleavage of the O-allyl-hydroxylamine gives access to the allylic alcohol unit.
Meisenheimer rearrangements of N-allyl 2-azabornane derivatives
作者:Jonathan E. H. Buston、Iain Coldham、Keith R. Mulholland
DOI:10.1039/a903050f
日期:——
A study of the asymmetric [2,3]-Meisenheimer rearrangement of tertiary amine-N-oxides was carried out, in order to provide a method for the preparation of chiral allylic alcohols. The use of 2-azabornane as a chiralauxiliary gives rise to chiral tertiary amine-N-oxides, which undergo the [2,3]-Meisenheimer rearrangement with high levels of stereoselectivity. ReductiveN,O-bond cleavage, mediated by