Preparation of NHC Borane Complexes by Lewis Base Exchange with Amine− and Phosphine−Boranes

• Published in: Journal of organic chemistry Vol. 75; no. 20; pp. 6983 - 6985
• Main Authors: Brahmi, Malika Makhlouf, Monot, Julien, Desage-El Murr, Marine, Curran, Dennis P, Fensterbank, Louis, Lacôte, Emmanuel, Malacria, Max
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 15-10-2010
• Subjects: Amines - chemistry; Boranes - chemical synthesis; Boranes - chemistry; Chemistry; Exact sciences and technology; Heterocyclic compounds; Heterocyclic Compounds - chemical synthesis; Heterocyclic Compounds - chemistry; Heterocyclic compounds with several n hetero atoms in the same ring, in separated rings or in fused rings; Methane - analogs & derivatives; Methane - chemical synthesis; Methane - chemistry; Molecular Structure; Organic chemistry; Phosphines - chemistry; Preparations and properties; Stereoisomerism; Imidazole derivatives; Amine; Nitrogen heterocycle; Phosphine borane; Organic boron compounds; Boron Organic compounds; Organic borane; Lewis base; Chemical synthesis; Heterocyclic compound
• ISSN: 0022-3263; 1520-6904
• DOI: 10.1021/jo101301d

A versatile new method for the preparation of NHC boranes starting from two stable, readily available reactants―an heterocyclic salt and an amine or phosphine−borane―is reported. It uses a Lewis base exchange at boron and provides easy access to new NHC boranes, in particular B-substituted borane ones.