A new general method for preparation of N-methoxy-N-methylamides. Application in direct conversion of an ester to a ketone
作者:J.Michael Williams、Ronald B. Jobson、Nobuyoshi Yasuda、George Marchesini、Ulf-H. Dolling、Edward J.J. Grabowski
DOI:10.1016/0040-4039(95)01089-z
日期:1995.7
The reaction of an ester with N,O-dimethylhydroxylamine and a suitable organomagnesium reagent or lithium amide base provides a general method for the preparation of N-methoxy-N-methylamides. Application in the direct conversion of a highly hindered ester to a ketone, the azasteroid 5α-reductase inhibitor MK-0434, is described.
酯与N,O-二甲基羟胺和合适的有机镁试剂或氨基锂锂的反应提供了制备N-甲氧基-N-甲基酰胺的一般方法。描述了氮杂类固醇5α-还原酶抑制剂MK-0434在将高度受阻的酯直接转化为酮中的应用。