The use of a complex of the form Z—M—OR in the carboxylation of a substrate is described. The group Z is a two-electron donor ligand, M is a metal and OR is selected from the group consisting of OH, alkoxy and aryloxy. The substrate may be carboxylated at a C—H or N—H bond. The metal M may be copper, silver or gold. The two-electron donor ligand may be a phosphine, a carbene or a phosphite ligand. Also described are methods of manufacture of the complexes and methods for preparing isotopically labelled caboxylic acids and carboxylic acid derivatives.
[EN] CARBOXYLATION CATALYSTS<br/>[FR] CATALYSEURS DE CARBOXYLATION
申请人:UNIV ST ANDREWS
公开号:WO2011154700A1
公开(公告)日:2011-12-15
The use of a complex of the form Z-M-OR in the carboxylation of a substrate is described. The group Z is a two-electron donor ligand, M is a metal and OR is selected from the group consisting of OH, alkoxy and aryloxy. The substrate may be carboxylated at a C-H or N-H bond. The metal M may be copper, silver or gold. The two-electron donor ligand may be a phosphine, a carbene or a phosphite ligand. Also described are methods of manufacture of the complexes and methods for preparing isotopically labelled caboxylic acids and carboxylic acid derivatives.
Carboxylation of NH/CH Bonds Using N-Heterocyclic Carbene Copper(I) Complexes
作者:Ine I. F. Boogaerts、George C. Fortman、Marc R. L. Furst、Catherine S. J. Cazin、Steven P. Nolan
DOI:10.1002/anie.201004153
日期:2010.11.8
Greenhouse gas makes good: A simple copper‐mediated protocol has been developed where NH or CH bonds can be directly functionalized using an easily prepared catalyst. The novel [1,3‐bis(2,6‐diisopropylphenyl)imidazol‐2‐ylidene]copper(I) hydroxide, [Cu(IPr)(OH)], permits the facile activation and carboxylation of NH and CH bonds with pKa values of less than 27.7 (see scheme).
温室气体有益:已开发出一种简单的铜介导方案,其中可以使用易于制备的催化剂将NH或CH键直接官能化。新颖的[1,3-双(2,6-二异丙基苯基)咪唑-2-亚基]铜(I)氢氧化,[铜(IPR)(OH)],允许容易的激活和羧化N中的 H和13 C H键的p K a 值小于27.7(请参阅方案)。