Simple strategy for synthesis of optically active allylic alcohols and amines by using enantioselective organocatalysis
作者:Hao Jiang、Nicole Holub、Karl Anker Jørgensen
DOI:10.1073/pnas.0914523107
日期:2010.11.30
A simple organocatalytic one-pot protocol for the construction of opticallyactive allylic alcohols and amines using readily available reactants and catalyst is presented. The described reaction is enabled by an enantioselective enone epoxidation/aziridination-Wharton-reaction sequence affording two highly privileged and synthetically important classes of compounds in an easy and benign way. The advantages
Chiral aziridination of cyclic α-bromoenones is achieved by the use of the lithium salt of (S S )-(+)-p-toluenesulfinamide, which leads to products with diastereomeric excesses in the range of 30―65% using a simple protocol. A key factor associated with chiral induction is the incorporation of the reacting olefin in a cycle, indicating the importance of conformational restriction in the reacting double
Reduction of 2-Acylaziridines by Samarium(II) Iodide. An Efficient and Regioselective Route to β-Amino Carbonyl Compounds.
作者:G Molander
DOI:10.1016/s0040-4020(97)00576-0
日期:1997.6.30
Palladium(II) mediated aziridination of olefins with bromamine-T as the nitrogen source: scope and mechanism
作者:Alexandra M.M. Antunes、Vasco D.B. Bonifácio、Susana C.C. Nascimento、Ana M. Lobo、Paula S. Branco、Sundaresan Prabhakar
DOI:10.1016/j.tet.2007.05.020
日期:2007.7
The palladium(II)-promoted reaction of a variety of olefins and bromamine-T provided N-tosyl-2-substituted aziridines under mild conditions. Olefins bearing chiral appendages gave only a poor to modest diastereoselectivity. Appropriate deuterated olefins were selected to study the stereochemistry of the reaction. A Pd(IV) intermediate is proposed as the aziridinating species. (C) 2007 Elsevier Ltd. All rights reserved.