Three-component reactions of nitroarenes, benzaldehydes, and allyltributylstannane using indium in dilute aqueous HCl at room temperature afford the corresponding homoallylic amines in high yields within 5-10 min. The conversion in one-pot synthesis involves the following steps: (i) reduction of nitro compounds to amines, (ii) formation of imines from amines and aldehydes, and (iii) allylation of imines. (C) 2008 Elsevier Ltd. All rights reserved.
Asymmetric Allylation of Aldimines with Indium and (+)‐Cinchonine
作者:Rongbi Han、Seung Hyuk Choi、Kee In Son、Young Moo Jun、Byung Min Lee、Byeong Hyo Kim
DOI:10.1081/scc-200061721
日期:2005.6.1
By applying indium and allyl bromide, aldimines were converted into homoallyl amines with excellent yields. The addition of (+)-cinchonine to the reaction mixture yielded enantioselective allylation with 22-44% ee.