Synthesis and Catalytic Activity of Chiral Dicarbene Dipalladium Complexes Incorporating the S-binaphthol Unit. (January 2018)

• Record Type: Journal Article
• Authors: Zhang, Guowen; Chao, Man; Wang, Shuting; Zhu, Mengxia; Wang, Dou; Pang, Guangsheng; Shi, Yanhui
• Is Part Of: Journal of chemical research. Volume 42:Number 1(2018)
• Page Start: 54
• Page End: 56
• Publication Date: 2018-01
• Subjects: palladium -- N-heterocyclic carbene -- (S)-binaphthol -- Suzuki reaction -- catalysis; Chemistry -- Research -- Periodicals; Chemistry -- Periodicals; 540.5
• DOI: 10.3184/174751918X15168768395864
• Languages: English
• ISSNs: 1747-5198

Abstract

A series of chiral di-N-heterocyclic carbene (NHC) dipalladium complexes, [{PdPyCl2 }2 (di-NHC)], in which di-NHC represents a di-imidazolylidene, featuring an (S)-3, 3′-dimethyl-2, 2′-dimethoxy-1, 1′-binaphthalene spacer between the carbene units, have been prepared. The influence of ligand size on the catalytic activity of these complexes in the Suzuki reaction of phenylboronic acid with p-bromotoluene has been investigated. The most sterically hindered complex, bearing the di-isopropylphenyl group, showed the greatest catalytic activity, and it is active for various aryl halides with different electronic and steric properties.