title: Introducing deep eutectic solvents as biorenewable media for Au(I)-catalysed cycloisomerisation of γ-alkynoic acids: an unprecedented catalytic system.
abstract: Cycloisomerisation of γ-alkynoic acids into cyclic enol-lactones was conveniently performed, for the first time, in the eutectic mixture 1ChCl/2Urea under standard bench experimental conditions (at room temperature, under air and in the absence of co-catalysts) by using a new iminophosphorane-Au(I) complex as the catalyst. Furthermore, the catalytic system could be recycled up to four runs.
authors.affiliation: Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC), Departamento de Química Orgánica e Inorgánica, (IUQOEM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad de Oviedo, E-33071 Oviedo, Spain. garciajoaquin@uniovi.es.
authors.forename: María J
authors.initials: MJ
authors.lastname: Rodríguez-Álvarez
authors.forename: Cristian
authors.initials: C
authors.lastname: Vidal
authors.forename: Josefina
authors.initials: J
authors.lastname: Díez
authors.forename: Joaquín
authors.initials: J
authors.lastname: García-Álvarez
mesh_terms: D000143:Acids / Q000737:chemistry*; D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D003500:Cyclization; D055772:Green Chemistry Technology; D007097:Imines / Q000737:chemistry; D007536:Isomerism; D007783:Lactones / Q000737:chemistry*; D050607:Organogold Compounds / Q000737:chemistry*; D010421:Pentanoic Acids / Q000737:chemistry*; D010753:Phosphoranes / Q000737:chemistry*; D012997:Solvents; D014508:Urea / Q000737:chemistry
chemical_list: D000143:Acids; D000480:Alkynes; D007097:Imines; D007783:Lactones; D050607:Organogold Compounds; D010421:Pentanoic Acids; D010753:Phosphoranes; D012997:Solvents; D014508:Urea