Catalytic asymmetric reductive amination of ketones via highly enantioselective hydrogenation of the CN double bond
作者:Mark J. Burk、Jose P. Martinez、John E. Feaster、Nick Cosford
DOI:10.1016/s0040-4020(01)89375-3
日期:1994.4
a convenient, chemoselective asymmetric reductive amination procedure for the conversion of ketones to chiral hydrazines and amines. The key step in the three-step process is enantioselective DuPHOS-Rh-catalyzed hydrogenation of the CN double bond of N-acylhydrazones. Detailed optimization studies revealed the effect of solvent, temperature, and the N-acyl group on the enantioselectivity and catalytic
我们描述了一种方便的,化学选择性的不对称还原胺化程序,用于将酮转化为手性肼和胺。三步法中的关键步骤是对映选择性DuPHOS-Rh催化的N-酰基hydr的CN双键的加氢反应。详细的优化研究表明溶剂,温度和N-酰基对反应的对映选择性和催化效率的影响。还原产物N-酰基肼通过水解或分别用碘化((II)处理转化为肼或胺。