A facile microwave assisted synthesis of spiro-1,3-oxazines from N-(2-(cyclohex-1-en-1-yl)ethyl)amides
作者:Ujwal Pratim Saikia、Diganta Baruah、Pallab Pahari、Manash Jyoti Borah、Amrit Goswami、Dilip Konwar
DOI:10.1016/j.tetlet.2014.06.042
日期:2014.7
developed for the synthesis of spiro-1,3-oxazine derivatives by the microwave assisted cyclization of N-2-(1′-cyclohexenyl)ethyl-acetamides/benzamides. The reaction was catalyzed by in situ generated trimethylsilyl iodide and featured by its very short reaction time. The starting materials were easily obtained by the condensation of substituted acetic/benzoic acids with 2-(1′-cyclohexenyl)ethyl amine.
已经开发了一种温和有效的方法,用于通过微波辅助环化N -2-(1'-环己烯基)乙基-乙酰胺/苯甲酰胺来合成spiro-1,3-恶嗪衍生物。原位生成的三甲基甲硅烷基碘化物可催化该反应,其反应时间非常短。通过使取代的乙酸/苯甲酸与2-(1'-环己烯基)乙胺缩合,可以容易地获得起始原料。