The [2,3] sigmatropic rearrangement of N-benzyl-O-allylhydroxylamines
作者:Stephen G. Davies、John F. Fox、Simon Jones、Anne J. Price、Miguel A. Sanz、Thomas G. R. Sellers、Andrew D. Smith、F??tima C. Teixeira
DOI:10.1039/b205323n
日期:2002.7.26
The rearrangement of a range of N-benzyl-O-allylhydroxylamines to the corresponding N-allylhydroxylamines upon treatment with n-BuLi in THF, followed by reduction to the corresponding N-allylamines, is described. Mechanistic studies of the transformation are consistent with an intramolecular [2,3] sigmatropic rearrangement.
Formaldehyde as Tethering Organocatalyst: Highly Diastereoselective Hydroaminations of Allylic Amines
作者:Colin R. Hesp、Melissa J. MacDonald、M. Mehdi Zahedi、Didier A. Bilodeau、Shu-Bin Zhao、Marc Pesant、André M. Beauchemin
DOI:10.1021/acs.orglett.5b02675
日期:2015.10.16
Catalysts possessing sufficient activity to achieve intermolecular alkene hydroaminations under mild conditions are rare, and this likely accounts for the scarcity of asymmetric variants of this reaction. Herein, highly diastereoselective hydroaminations of allylicamines utilizing hydroxylamines as reagents and formaldehyde as catalyst are reported. This catalyst induces temporary intramolecularity
A novel [2,3] intramolecular rearrangement of N-benzyl-O-allylhydroxylamines
作者:Stephen G. Davies、Simon Jones、Miguel A. Sanz、Fátima C. Teixeira、John F. Fox
DOI:10.1039/a806200e
日期:——
A novel [2,3]-sigmatropic rearrangement whereby N-benzyl-O-allylhydroxylamines undergo transformation to the corresponding N-allylhydroxylamines, which can subsequently be reduced to the corresponding allylamines, is described and evidence for the intramolecular nature of this process presented.