Synthesis of Enantiomerically Enriched Propargylamines by Copper-Catalyzed Addition of Alkynes to Enamines
作者:Christopher Koradin、Nina Gommermann、Kurt Polborn、Paul Knochel
DOI:10.1002/chem.200204691
日期:2003.6.16
The first copper(I) bromide/Quinap-catalyzed synthesis of enantiomerically enriched propargylamines by addition of alkynes to enamines is reported. Various functionalized terminal alkynes add smoothly to Nprotected enamines to afford the corresponding amines in good to high yields and moderate to good enantiomeric excesses. The influence of the metal salt, the ligand, and the protecting group on the
报道了通过将炔烃加到烯胺中的第一对溴化铜(I)/奎纳普催化的对映体富集的炔丙基胺的合成。各种官能化的末端炔烃平稳地添加到N保护的烯胺中,以高至高收率和中度至良好的对映体过量提供相应的胺。研究了金属盐,配体和保护基对转化率,反应速率和反应立体选择性的影响。还描述了反应的范围和所得炔丙基胺的进一步转化(脱保护,Pauson-Khand反应)。