Controlled Diastereo- and Enantioselection in a Catalytic Asymmetric Aziridination
作者:Aman A. Desai、William D. Wulff
DOI:10.1021/ja1038648
日期:2010.9.29
the development of an unprecedented universal catalyticasymmetricaziridination protocol. The substrate scope is broad and includes iminespreparedfrom both electron-rich and electron-poor aromatic aldehydes and also from 1°, 2°, and 3° aliphatic aldehydes. The face selectivity of the addition to the imine was found to be independent of the diazo compounds. The (S)-VANOL or (S)-VAPOL derived catalyst
Multicomponent <i>cis</i>- and <i>trans</i>-Aziridinatons in the Syntheses of All Four Stereoisomers of Sphinganine
作者:Yubai Zhou、Munmun Mukherjee、Anil K. Gupta、William D. Wulff
DOI:10.1021/acs.orglett.7b00697
日期:2017.5.5
All four stereoisomers of sphinganine can be synthesized by a multicomponent aziridination of an aldehyde, an amine and an α-diazo carbonyl compound mediated by a BOROX catalyst with high asymmetric induction (≥96% ee). The threo isomers are available from ring-opening of cis-aziridines by an oxygen nucleophile with inversion at the C-3 position and the erythro-isomers are likewise available from trans-aziridines