Preparation of Weinreb Amides Using 4-(4,6-Dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium Chloride (DMT-MM)
作者:Kazuhito Hioki、Hiroko Kobayashi、Rumi Ohkihara、Shohei Tani、Munetaka Kunishima
DOI:10.1248/cpb.52.470
日期:——
Weinreb amides were successfully prepared from the corresponding carboxylic acids using 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (DMT-MM) in the solvents, methanol, isopropyl alcohol, and acetonitrile, which can solubilize DMT-MM. A variety of carboxylic acids were converted to the corresponding Weinreb amides in excellent yields by simply mixing with DMT-MM and N,O-dimethylhydroxylamine hydrochloride.
使用溶剂甲醇、异丙醇和乙腈(这些溶剂能够溶解4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基吗啉氯化物(DMT-MM)),从相应的羧酸成功制备了Weinreb酰胺。通过简单地将各种羧酸与DMT-MM和N,O-二甲基羟胺盐酸盐混合,它们被高效地转化为相应的Weinreb酰胺。