Some N-hydroxy-N-methylamidines and 1,2,4-oxadiazol-5(2H)-ones
作者:Peter W. Seale、William K. Warburton
DOI:10.1039/p19740000085
日期:——
Aromatic and heterocyclic nitriles react with N-methylhydroxylamine to give N-hydroxy-N-methylamidines (4). The latter, when treated with ethyl chloroformate, give 1,2,4-oxadiazol-5(2H)-ones (9). Sodium borohydride reduces compound (9; R =p-C6H4Cl) to the corresponding oxadiazolidinone (10). The tautomeric structure of p-chlorobenzamide oxime is discussed.
芳族和杂环腈与之反应Ñ -methylhydroxylamine得到Ñ羟基Ñ -methylamidines(4)。当后者用氯甲酸乙酯处理时,得到1,2,4-恶二唑-5(2 H)-一(9)。硼氢化钠将化合物(9; R = p -C 6 H 4 Cl)还原为相应的恶二唑烷酮(10)。讨论了对氯苯甲酰胺肟的互变异构结构。