Chiral Calcium Organophosphate-Catalyzed Enantioselective Electrophilic Amination of Enamides
作者:Fleur Drouet、Claudia Lalli、Hua Liu、Géraldine Masson、Jieping Zhu
DOI:10.1021/ol102625s
日期:2011.1.7
Highly enantioselective direct amination of enamides catalyzed by chiral nonracemic calcium bis(phosphate) complex 3g afforded optically active 1,2-hydrazinoimines 4. Following a subsequent in situ hydrolysis or reduction, 2-hydrazinoketones 5 or syn-1,2-disubstituted 1,2-diamines 6 were obtained in high yields and excellent enantiomeric excess.