title: Regioselective cyclization of alpha,omega-alkynoic acids catalysed by TpRu complexes: synthesis of endocyclic enol lactones [Tp = hydrotris(pyrazolyl)borate].
abstract: The sigma-enynyl complex [TpRu(C(Ph)=C(Ph)C identical to CPh)(P-MeiPr2)] efficiently catalyses the regioselective cyclization of alpha,omega-alkynoic acids to yield endocyclic enol lactones having ring size up to 12 atoms.
authors.affiliation: Departamento de Ciencia de Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Apartado 40, 11510 Puerto Real, Cádiz, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Jiménez-Tenorio
authors.forename: M C
authors.initials: MC
authors.lastname: Puerta
authors.forename: P
authors.initials: P
authors.lastname: Valerga
authors.forename: F J
authors.initials: FJ
authors.lastname: Moreno-Dorado
authors.forename: F M
authors.initials: FM
authors.lastname: Guerra
authors.forename: G M
authors.initials: GM
authors.lastname: Massanet
mesh_terms: D000480:Alkynes; D002264:Carboxylic Acids / Q000737:chemistry; D002384:Catalysis; D003500:Cyclization; D007783:Lactones / Q000138:chemical synthesis* / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry; D012428:Ruthenium / Q000737:chemistry
chemical_list: D000480:Alkynes; D002264:Carboxylic Acids; D007783:Lactones; D009942:Organometallic Compounds; D012428:Ruthenium