A new approach to 4-(2-aminoethyl)indoles via Claisen ortho-amide rearrangement of 3-hydroxy-2-methoxyindolines
作者:Tomomi Kawasaki、Hiroaki Ohtsuka、Masanori Sakamoto
DOI:10.1039/c39900000781
日期:——
Reaction of 3-hydroxy-2-methoxyindoline (4) with the amide acetal (5) gives 4-carbamoylmethyl-indoline (7) and -indole (8), which are converted into 4-(2-aminoethyl)indole (10) by treatment of the indoline (7) with hydrogen chloride followed by sodium hydroxide to form the indole (8), and then by reduction of the indole (8) with lithium aluminium hydride.
3-羟基-2-甲氧基吲哚啉(4)与酰胺缩醛(5)的反应产生4-氨基甲酰基甲基吲哚啉(7)和-吲哚(8),它们被转化为4-(2-氨基乙基)吲哚(10)通过用氯化氢,然后用氢氧化钠处理吲哚(7),形成吲哚(8),然后用氢化锂铝还原吲哚(8)。