Catalyst-free Synthesis of 6-Hydroxy Indoles via the Condensation of Carboxymethyl Cyclohexadienones and Amines
作者:Reddy Rajasekhar Reddy、Komalkant Adlak、Prasanta Ghorai
DOI:10.1021/acs.joc.7b01136
日期:2017.8.18
cyclohexadienones and primary amines has been developed. The aza-Michael addition of the in situ formed enamine, generated through the condensation of carboxymethyl unit of the substrates with an external amine, to cyclohexadienone moiety followed by rearomatization reaction to provide such indoles. Anilines, aliphatic amines, α-chiral aliphatic amines, or even ammonia were used as amine counterpart. Some of
已经开发了由羧甲基环己二酮和伯胺有效地无催化剂合成6-羟基吲哚的方法。通过底物的羧甲基单元与外部胺的缩合产生的原位形成的烯胺的氮杂-迈克尔加成至环己二烯酮部分,然后进行重新芳构化反应以提供这种吲哚。苯胺,脂肪族胺,α-手性脂肪族胺,甚至氨水都用作胺的对应物。使用Re 2 O 7催化剂,一些环己二酮生成6-氨基吲哚而不是6-羟基吲哚。进行了各种方法学后转换,以探索合成的羟基吲哚的合成效用。