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。
Three-component coupling reactions of propargyl halides, amines, and organic halides in the presence of palladium–copper catalysis produced efficiently highly functionalizedpropargylic amines in good to excellent yields at room temperature. Extension to the synthesis of 2-(dialkylaminomethyl)benzo[b]furan or indole derivatives is described.
炔丙基卤,胺和有机卤化物在钯-铜催化下的三组分偶联反应可在室温下高效高效地官能化炔丙基胺,并具有良好或优异的收率。描述了2-(二烷基氨基甲基)苯并[ b ]呋喃或吲哚衍生物的合成的扩展。
Three-component one-pot process to propargylic amines and related amide and sulfonamide compounds: application to the construction of 2-(aminomethyl)benzofurans and indoles
wide variety of tertiarypropargylic amines were synthesized in good to excellent yields from easily accessible starting materials. This three-component assembling was also effective when using potassium phthalimide or di-tert-butyliminodicarbonate instead of secondary amines. Consequently, it provides a quick entry to N-protected propargylic amines suitable intermediates for the synthesis of primary and
描述了一种高效的钯铜催化的炔丙基卤化物,芳基或杂芳基卤化物和仲胺的三组分组装。从易于获得的起始原料中,以高至优异的产率合成了多种叔炔丙基胺。当使用邻苯二甲酰亚胺钾或叔丁基亚氨基二碳酸酯代替仲胺时,这种三组分组装也是有效的。因此,它可以快速进入N-保护的炔丙基胺是合成伯和仲炔丙基胺的合适的中间体。以类似的方式,有效地获得了包括炔丙基酰胺,氨基甲酸酯和磺酰胺衍生物的相关化合物。该催化多米诺三组分工艺已成功地用于构建具有生物学意义的功能化2-(氨基甲基)苯并[ b ]呋喃或吲哚衍生物。
Gold(III) – metal organic framework bridges the gap between homogeneous and heterogeneous gold catalysts
作者:X. Zhang、F.X. Llabrés i Xamena、A. Corma
DOI:10.1016/j.jcat.2009.04.021
日期:2009.7.25
containing an Au(III) Schiff base complex lining the pore walls has been prepared by a post-synthesis method. The Au(III)-containing MOF is highly active and selective for domino coupling and cyclization reactions in liquid phase, the Au(III) species remain after the reaction, and the catalyst is fully recyclable. This gives higher activity than homogeneous and gold-supported catalysts reported up to