title: Remarkable anion effects uncovered in the development of a Au(III)-catalyzed tandem nucleophilic substitution-1,5-enyne cycloisomerization process.
abstract: (I(t)Pe)AuBr(2)(N-imidate) complexes, prepared in high yield by oxidative bromination, are active catalysts for 1,5-enyne cycloisomerization. An efficient tandem nucleophilic substitution-1,5-enyne cycloisomerization is promoted by these novel Au(III) precatalysts. Catalyst efficacy is affected by the imidate ligand and the silver salt used (e.g. Ag[Al(OC(CF(3))(3))(4)]).
authors.affiliation: Department of Chemistry, University of York, Heslington, York, UK YO10 5DD.
authors.forename: Jonathan P
authors.initials: JP
authors.lastname: Reeds
authors.forename: Adrian C
authors.initials: AC
authors.lastname: Whitwood
authors.forename: Mark P
authors.initials: MP
authors.lastname: Healy
authors.forename: Ian J S
authors.initials: IJ
authors.lastname: Fairlamb
mesh_terms: D000838:Anions; D002384:Catalysis; D003500:Cyclization; D006046:Gold / Q000737:chemistry*; D007536:Isomerism; D008024:Ligands; D008958:Models, Molecular
chemical_list: D000838:Anions; D008024:Ligands; D006046:Gold