Preparation of Weinreb Amides Using 4-(4,6-Dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium Chloride (DMT-MM)

Kazuhito Hioki, Hiroko Kobayashi, Rumi Ohkihara, Shohei Tani, Munetaka Kunishima
2004 Chemical and pharmaceutical bulletin  
Weinreb amides were successfully prepared from the corresponding carboxylic acids using 4-(4,6dimethoxy-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.
doi:10.1248/cpb.52.470 pmid:15056969 fatcat:fh6shd42cjfqxl7t4p4sineube