Fischer Indolization of N.ALPHA.-Alkyl-2-allylphenylhydrazones.
作者:Hajime KATAYAMA、Noriyuki TAKATSU、Yohko TAKEUCHI、Michiyo YAMAGIWA
DOI:10.1248/cpb.41.816
日期:——
Fischer indolization of the hydrazones of 8-allyl-1-amino-, 1, 2, 3, 4-tetrahydroquinoline and related compounds was investigated. Fischer indolization induced Cope rearrangement of the allyl group and acid-catalyzed intramolecular cycloaddition between the hydrazonyl group and the vinyl group. The base treatment of the latter reaction product caused eliminative ring-opening of the adduct and led to the formation of an indoline skeleton bearing a 2-ketoalkyl group at the C-2 position.
研究了 8-烯丙基-1-氨基-、1,2,3,4-四氢喹啉和相关化合物的腙的费歇尔吲哚化反应。 Fischer 吲哚化诱导烯丙基的 Cope 重排以及腙基和乙烯基之间的酸催化分子内环加成。后一反应产物的碱处理导致加合物消除开环并导致形成在C-2位带有2-酮烷基的二氢吲哚骨架。