Preparation and novel cycloaddition reactions of 7-dimethylamino-1H-azepin-3(2H)-one
作者:Elise Cartmell、James E. Mayo、Hamish McNab、Ian H. Sadler
DOI:10.1039/c39930001417
日期:——
A convenient preparation of the functionalised azepinone 3 is reported: this compound reacts with acid to give a stable mixture of O- and C-protonated materials, it gives the substitution product 4 on reaction with methoxymethylene Meldrum's acid 5, and on treatment with propiolic ester gives a 1,3,4-trisubstituted pyrrole 6 by a novel cycloaddition-condensation sequence.
据报道,方便地制备了官能化的氮杂环庚酮3:该化合物与酸反应,生成稳定的O和C质子化混合物,在与甲氧基亚甲基Meldrum的酸5反应和丙酸酯处理时,得到取代产物4。通过新颖的环加成-缩合序列得到1,3,4-三取代的吡咯6。