Asymmetric Schmidt Reaction of Hydroxyalkyl Azides with Ketones
作者:Kiran Sahasrabudhe、Vijaya Gracias、Kelly Furness、Brenton T. Smith、Christopher E. Katz、D. Srinivasa Reddy、Jeffrey Aubé
DOI:10.1021/ja0348896
日期:2003.7.1
asymmetric equivalent of the Schmidtreaction permits stereocontrol in ring expansions of symmetrical cyclohexanones. The procedure involves the reaction of chiral 1,2- and 1,3-hydroxyalkyl azides with ketones under acid catalysis; the initial reaction affords an iminium ether that can be subsequently opened with base. A systematic study of this reaction is reported, in which ketone substrates, chiral hydroxyalkyl