About the synthesis of [1,2]diazepinoindole derivatives from ethyl 2-(1-methylindole)acetate, 2-indole and 3-indoleacetohydrazones
作者:A. Monge、J. A. Palop、T. Goñí、A. Martínez、E. Fernández-Alvarez
DOI:10.1002/jhet.5570220565
日期:1985.9
The Vilsmeier-Haack reaction with ethyl 2-(1-methylindole)acetate and N,N-Dimethylamides/phosphorus oxychloride gave (65–85%) of ethyl 2-(3-acyl-1-methylindole)acetates 2, which when boiled with hydrazine yielded about 90% of 4,5-dihydro-6-methyl-4-oxo-3H[1,2]diazepino[5,6-b]indoles 3. The attempted cyclization of 2-(1-methylindole)acetohydrazones 6 with acyl (acetyl and benzoyl) chlorides/triethylamine
与2-(1-甲基吲哚)乙酸乙酯和N,N-二甲基酰胺/氯氧化磷进行Vilsmeier-Haack反应,得到(65-85%)乙基2-(3-酰基-1-甲基吲哚)乙酸盐2,将其煮沸用肼生成约90%的4,5-二氢-6-甲基-4-氧代-3 H [1,2]二氮杂[ 5,6- b ]吲哚3。尝试将2-(1-甲基吲哚)环化acetohydrazones 6与酰基(乙酰基,苯甲酰基)氯化物/三乙胺,为[1,2]二氮杂卓并[5,6- b ]吲哚衍生物是徒劳的和双(酰基)腙9获得。9的几种转换被报道。类似地,3-indoleacetohydrazones所尝试的环化14与乙酰氯/三乙胺进行[1,2]二氮杂卓并[4,5- b ]吲哚衍生物也是徒劳和双(酰基)腙16再次获得。