Studies on the Lewis acid mediated cleavage of α-aminoacetals: synthesis of novel 1,2-aminoethers, and evidence for α-alkoxy aziridinium ion intermediatesElectronic supplementary information (ESI) available: correlation of 1H NMR spectra between the syn and anti diastereomeric series. See http://www.rsc.org/suppdata/ob/b2/b210116e/
作者:Mark A. Graham、Alan H. Wadsworth、Abdul Zahid、Christopher M. Rayner
DOI:10.1039/b210116e
日期:2003.2.27
reactive intermediates involved in the reaction. With diethylzinc, it is most likely that the reaction proceeds by coordination of the nucleophile to the amino group followed by transfer of an ethyl group to an alpha-oxocarbenium ion. With non-coordinating nucleophiles, the stereochemical outcome can be rationalised in terms of addition to the possible alpha-alkoxy aziridiniumionintermediates.