An efficient and versatile ‘green’ catalytic system for the Buchwald–Hartwig cross-coupling reaction in water is reported. In an aqueous micellar medium, the combination of t-BuXPhos with [(cinnamyl)PdCl]2 showed excellent performance for coupling arylbromides or chlorides with a large set of amines, amides, ureas and carbamates. The method is functional-group tolerant, proceeds smoothly (30 to 50
Efficient and Mild Ullmann-Type N-Arylation of Amides, Carbamates, and Azoles in Water
作者:Maud Bollenbach、Pedro G. V. Aquino、João Xavier de Araújo-Júnior、Jean-Jacques Bourguignon、Frédéric Bihel、Christophe Salomé、Patrick Wagner、Martine Schmitt
DOI:10.1002/chem.201700832
日期:2017.10.4
A simple, sustainable, efficient, mild, and low‐cost protocol was developed for d‐glucose‐assisted Cu‐catalyzed Ullmann reactions in water for amides, carbamates, and nitrogen‐containing heterocycles. The reaction was compatible with diverse aryl/heteroaryl iodides, giving highly substituted pyridine, indole, or indazole rings. This method offers an attractive alternative to existing protocols, because
[EN] ORGANIC REACTIONS CARRIED OUT IN AQUEOUS SOLUTION IN THE PRESENCE OF A HYDROXYALKYL(ALKYL)CELLULOSE OR AN ALKYLCELLULOSE<br/>[FR] RÉACTIONS ORGANIQUES RÉALISÉES DANS UNE SOLUTION AQUEUSE EN PRÉSENCE D'UNE HYDROXYALKYL(ALKYL)CELLULOSE OU D'UNE ALKYLCELLULOSE
申请人:ABBVIE DEUTSCHLAND
公开号:WO2017129796A1
公开(公告)日:2017-08-03
The present invention relates to a method of carrying out an organic reaction in aqueous solution in the presence of a hydroxyalkyl(alkyl)cellulose or an alkylcellulose.
The Synthesis of<i>N</i>-Arylated Amides<i>via</i>Copper(II) Triflate- Catalyzed Direct Oxygenation and<i>N</i>-Arylation of Benzylamines with Aryl Iodides
An efficient approach for the synthesis of N-arylated amides by copper(II) triflate-catalyzed direct oxygenation and N-arylation reaction of benzylamines with aryl iodides is reported. Various benzylamines and aryl iodides can participate in the reaction, providing a series of N-arylated amides in moderate to good yields.
Efficient ligand-free copper-catalyzed N-arylation of amides with aryl halides in water
作者:Fui-Fong Yong、Yong-Chua Teo、Guan-Leong Chua、Gina Shiyun Lim、Yizhen Lin
DOI:10.1016/j.tetlet.2011.01.003
日期:2011.3
A convenient and efficient protocol has been developed for the cross-coupling of amides and aryl iodides using a ligand-freecopper(I) oxide catalyst in water. A variety of amide derivatives afforded the corresponding N-arylated products in moderate to good yields (up to 88%).