Polycyclic N-Hetero Compounds. V. A Novel Synthesis of Isoquinoline by the Vilsmeier Reaction of Phenylacetonitriles
作者:TAKAJI KOYAMA、TAKASHI HIROTA、YURIE SHINOHARA、MASATOSHI YAMATO、SHINJI OHMORI
DOI:10.1248/cpb.23.497
日期:——
A novel synthesis of 3-chloro-or 3-chloro-4-formylisoquinolines by the Vilsmeier reaction of phenylacetonitriles is described. 3, 5-Dimethoxyphenylacetonitrile (I) afforded 3-chloro-6, 8-dimethoxyisoquinoline (II) in a good yield and a small amount of 3-chloro-6, 8-dimethoxy-4-formyl isoquinoline (III). Other phenylacetonitriles (V) afforded 3-chloro-4-formylisoquinoline derivatives (VI) only. The mechanism of this reaction is proposed.
描述了通过
苯乙腈的 Vilsmeier 反应合成 3-
氯-或 3-
氯-4-甲酰基
异喹啉的新方法。 3, 5-二
甲氧基苯基
乙腈(I)以良好的产率得到3-
氯-6, 8-二甲氧基
异喹啉(II)和少量的3-
氯-6, 8-二甲氧基-4-甲酰基
异喹啉(III)。其他
苯乙腈(V)仅提供3-
氯-4-甲酰基
异喹啉衍
生物(VI)。提出了该反应的机理。