chloride 14 were converted via Fischer syntheses with 3‐methylbutan‐2‐one into indolenines, 2,3,3‐trimethyl‐3H‐pyrrolo[2,3‐f]isoquinoline 15 and 5‐bromo‐2,3,3‐trimethyl‐3H‐pyrrolo[3,2‐h]isoquinoline 16, respectively. Exposure of the indolenines to the Vilsmeier reagent produced diformyl compounds 17 and 18, which reacted with arylhydrazines to give the corresponding pyrazoles 19a, 19b, 19c, 19d, 19e,
异喹啉-5- ylhydrazinium酰
氯13和
5-溴异喹啉-8- ylhydrazinium
氯化物14转化经由费歇尔合成用3-甲基丁-2-酮为假
吲哚,2,3,3-三甲基-3- ħ
吡咯并[2,3- f ]
异喹啉15和5-
溴-2,3,3-三甲基-3 H-
吡咯并[3,2- h ]
异喹啉16。将
吲哚肾上腺素暴露于Vilsmeier试剂可制得二甲酰基化合物17和18,它们与芳基
肼反应生成相应的
吡唑19a,19b,19c,19d,19e,19f,19g,19h,19i和20a,20b,20c,20d,20e,20f,20g。17与
硫脲的反应生成了
嘧啶-2(1 H)-
硫酮23或与
盐酸羟胺即
异恶唑24的反应。