Cyclization of 1-Benzyl-1,2-dihydro-2-(substituted methylene)quinolines to Pyrrolo[1,2-a]quinoline Derivatives
作者:Reiko Fujita、Masato Hoshino、Hiroshi Tomisawa
DOI:10.1248/cpb.54.334
日期:——
um iodides with active methylene compounds in the presence of sodium hydride afforded 1-alkyl-1,2-dihydro-2-(substituted methylene)quinolines in good yields. The cyclization of 1-benzylquinolines using acetic anhydride produced the corresponding pyrrolo[1,2-a]quinoline derivatives.
由1-烷基-2(1H)-喹诺酮经1-烷基-2(1H)-硫喹诺酮分两步制备1-烷基-2-烷基硫代喹啉鎓盐。在温和的条件下,使1-烷基-2-烷基硫代喹啉碘鎓碘化物与活性亚甲基化合物在氢化钠存在下反应,以高收率得到1-烷基-1,2-二氢-2-(取代的亚甲基)喹啉。使用乙酸酐对1-苄基喹啉进行环化反应可生成相应的吡咯并[1,2-a]喹啉衍生物。