通过铜催化的2-乙炔基苯胺与仲胺和醛的多米诺三组分偶联-环化反应,已开发出直接方法用于2-(氨基甲基)吲哚。通过在1摩尔%的CuBr存在下使用环状或无环仲胺和醛(低聚甲醛,脂肪族或芳香族醛),将2-乙炔基苯胺以良好的收率转化为各种取代的2-(氨基甲基)吲哚。利用该多米诺反应和吲哚C-3位的CH官能化,可以轻松合成多环吲哚。还介绍了通过磺酰胺和丙二酸酯同类物的反应来构建苯并[ e ] [1,2]噻嗪和茚基图案。
Abstract The cyclization reaction of 2-ethynyl- N -sulfonylanilides proceeded efficiently in water with the presence of a catalytic amount of K 2 CO 3 under transition metal-free condition to give indoles in high yields. The recovery and reusability of the present catalytic system were investigated.
摘要在无过渡金属条件下,在催化量的K 2 CO 3存在下,2-乙炔基-N-磺酰腈在水中的环化反应有效地进行,从而获得了高产率的吲哚。研究了本催化体系的回收率和可重复使用性。
Construction of Nitrogen Heterocycles Bearing an Aminomethyl Group by Copper-Catalyzed Domino Three-Component Coupling−Cyclization
A direct approach to 2-(aminomethyl)indoles by copper-catalyzed domino three-component coupling−cyclization of 2-ethynylanilines with a secondary amine and aldehyde has been developed. By use of a cyclic or acyclic secondary amine and aldehyde (paraformaldehyde, aliphatic or aromatic aldehydes) in the presence of 1 mol % of CuBr, 2-ethynylanilines were converted to a variety of substituted 2-(aminomethyl)indoles
通过铜催化的2-乙炔基苯胺与仲胺和醛的多米诺三组分偶联-环化反应,已开发出直接方法用于2-(氨基甲基)吲哚。通过在1摩尔%的CuBr存在下使用环状或无环仲胺和醛(低聚甲醛,脂肪族或芳香族醛),将2-乙炔基苯胺以良好的收率转化为各种取代的2-(氨基甲基)吲哚。利用该多米诺反应和吲哚C-3位的CH官能化,可以轻松合成多环吲哚。还介绍了通过磺酰胺和丙二酸酯同类物的反应来构建苯并[ e ] [1,2]噻嗪和茚基图案。