Design and preparation of new palladium precatalysts for C–C and C–N cross-coupling reactions
作者:Nicholas C. Bruno、Matthew T. Tudge、Stephen L. Buchwald
DOI:10.1039/c2sc20903a
日期:——
of easily prepared, phosphine-ligated palladiumprecatalysts based on the 2-aminobiphenyl scaffold have been prepared. The role of the precatalyst-associated labile halide (or pseudohalide) in the formation and stability of the palladacycle has been examined. It was found that replacing the chloride in the previous version of the precatalyst with a mesylate leads to a new class of precatalysts with
Described are palladium precatalysts, and methods of making and using them. The palladium precatalysts show improved stability and improved reactivity in comparison to previously-described palladium precatalysts.
Two Component Recyclable Heterogeneous Catalyst, Process for Preparation Thereof and its Use for Preparation of Amines
申请人:Likhar Pravin R.
公开号:US20110313158A1
公开(公告)日:2011-12-22
The invention describes the development of highly efficient, recyclable two component system, CuAl-hydrotalcite/rac 1,1′-Binaphthalene-2,2′-diol catalytic system for the N-alkylation of electron deficient aryl chlorides in presence of potassium carbonate as a base at room temperature in 3-6 h, wherein the process is provided for the preparation of various secondary amines via C—N coupling reaction of aliphatic amines(aliphatic open chain, acyclic, benzyl amines and heterocyclic amines) with various aryl chlorides.
[EN] A TWO COMPONENT RECYCLABLE HETEROGENEOUS CATALYST, PROCESS FOR PREPARATION THEREOF AND ITS USE FOR PREPARATION OF AMINES<br/>[FR] CATALYSEUR HÉTÉROGÈNE RECYCLABLE À DEUX COMPOSANTS, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION POUR LA PRÉPARATION D'AMINES
申请人:COUNCIL SCIENT IND RES
公开号:WO2010097815A2
公开(公告)日:2010-09-02
The invention describes the development of highly efficient, recyclable two component system, CuAl-hydrotalcite/rac 1,1'-Binaphthalene-2,2'-diol catalytic system for the N-alkylation of electron deficient aryl chlorides in presence of potassium carbonate as a base at room temperature in 3-6 h, wherein the process is provided for the preparation of various secondary amines via C-N coupling reaction of aliphatic amines (aliphatic open chain, acyclic, benzyl amines and heterocyclic amines) with various aryl chlorides.