A simple, one-flask transformation of ketones to N-methyl lactams
作者:Robert V. Hoffman、James M. Salvador
DOI:10.1016/s0040-4039(00)74345-0
日期:1991.11
A one-flask conversion of cyclic ketones to N-methyl lactams is described. Reaction of the ketone with triethylorthoformate generates an acetal which is reacted in situ with N-(((p-nitrobenzene)sulfonyl)oxy methylamine 2a(CH3NH-OSO2C6H4NO2). Dealkylation of the resulting O-ethyl imidate with sodiumiodide gives the lactam. A variety of lactams, including macrocyclic lactams, are produced simply and
描述了环状烧瓶到N-甲基内酰胺的单烧瓶转化。酮与原甲酸三乙酯反应生成缩醛,该缩醛与N-(((对硝基苯)磺酰基)氧基甲胺2a(CH 3 NH-OSO 2 C 6 H 4 NO 2)原位反应。亚胺酸乙酯与碘化钠制得内酰胺,可以简单,高收率地生产各种内酰胺,包括大环内酰胺。
Topical Mosquito Repellents III: Carboxamide Acetals and Ketals and Related Carbonyl Addition Derivatives