title: Gold-Catalyzed Intramolecular Regioselective 7-exo-dig Cyclization To Access 3-Methylene-3,4-dihydrobenzo[b]oxepinones.
abstract: An efficient gold-catalyzed synthesis of substituted 3-methylene-3,4-dihydrobenzo[b]oxepinones from ortho-O-propargyl substituted aryl enaminones has been achieved. In this transformation a new C-C bond formation occurred regioselectively via 7-exo-dig cyclization. Benzooxepinone derivatives were obtained in good to excellent yields in a one-pot synthesis at ambient temperature.
authors.affiliation: Crop Protection Chemicals Division, ‡Academy of Scientific and Innovative Research, and ∥Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad, 500007, India.
authors.forename: N S V M Rao
authors.initials: NS
authors.lastname: Mangina
authors.affiliation: Crop Protection Chemicals Division, ‡Academy of Scientific and Innovative Research, and ∥Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad, 500007, India.
authors.forename: Veerabhushanam
authors.initials: V
authors.lastname: Kadiyala
authors.affiliation: Crop Protection Chemicals Division, ‡Academy of Scientific and Innovative Research, and ∥Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad, 500007, India.
authors.forename: Ravinder
authors.initials: R
authors.lastname: Guduru
authors.affiliation: Crop Protection Chemicals Division, ‡Academy of Scientific and Innovative Research, and ∥Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad, 500007, India.
authors.forename: Kommuru
authors.initials: K
authors.lastname: Goutham
authors.affiliation: Crop Protection Chemicals Division, ‡Academy of Scientific and Innovative Research, and ∥Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad, 500007, India.
authors.forename: Balasubramanian
authors.initials: B
authors.lastname: Sridhar
authors.affiliation: Crop Protection Chemicals Division, ‡Academy of Scientific and Innovative Research, and ∥Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology , Hyderabad, 500007, India.
authors.forename: Galla V
authors.identifier: 0000-0001-8971-8550
authors.initials: GV
authors.lastname: Karunakar