Synthesis of modified Weinreb amides: N-tert-butoxy-N-methylamides as effective acylating agents
作者:Olivier Labeeuw、Phannarath Phansavath、Jean-Pierre Genêt
DOI:10.1016/j.tetlet.2004.07.106
日期:2004.9
An efficient preparation of N-methyl-O-tert-butylhydroxylamine hydrochloride has been settled, which allowed the synthesis of modified Weinreb amides. Nucleophilic addition of organolithium and Grignard reagents on these N-tert-butoxy-N-methylamides afforded efficiently the corresponding ketones and reduction with DIBAL furnished the corresponding aldehydes in good yields up to 97%.
的有效制备Ñ甲基ö -叔-butylhydroxylamine盐酸盐已经解决,这使得改性的Weinreb酰胺的合成。这些亲核加成有机锂和格氏试剂的ñ -叔-butoxy- Ñ -methylamides有效地得到相应的酮和用DIBAL还原布置以良好产率的相应的醛高达97%。