Direct intramolecular carbon(sp2)–nitrogen(sp2) reductive elimination from gold(iii). Issue 18 (16th April 2019)

• Record Type: Journal Article
• Authors: Kim, Jong Hyun; Mertens, R. Tyler; Agarwal, Amal; Parkin, Sean; Berger, Gilles; Awuah, Samuel G.
• Is Part Of: Dalton transactions. Volume 48:Issue 18(2019)
• Page Start: 6273
• Page End: 6282
• Publication Date: 2019-04-16
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c8dt05155k
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : The reactivity of bidentate Au III –Cl species, [(C^N)AuCl2 ], with a bisphosphine or carbon donor ligands results in reductive elimination. Abstract : The reactivity of bidentate Au III –Cl species, [(C^N)AuCl2 ], with a bisphosphine or carbon donor ligands results in reductive elimination. Combined experimental and computational investigations lead to the first evidence of a direct intramolecular C(sp 2 )–N(sp 2 ) bond formation from a monomeric [(C^N)AuCl2 ] gold(iii ) complex. We show that bidentate ligated Au(iii ) systems bypass transmetallation to form C(sp 2 )–N(sp 2 ) species and NHC–Au–Cl. Mechanistic investigations of the reported transformation reveal a ligand-induced reductive elimination via a key Au III intermediate. Kinetic studies of the reaction support a second-order rate process.