title: Synthesis of 2,1-benzisoxazole-3(1H)-ones by base-mediated photochemical N-O bond-forming cyclization of 2-azidobenzoic acids.
abstract: The base-mediated photochemical cyclization of 2-azidobenzoic acids with the formation of 2,1-benzisoxazole-3(1H)-ones is reported. The optimization and scope of this cyclization reaction is discussed. It is shown that an essential step of the ring closure of 2-azidobenzoic acids is the formation and photolysis of 2-azidobenzoate anions.
authors.affiliation: Chemistry Department, Lobachevsky State University of Nizhny Novgorod, Gagarina pr. 23, Building 5, 603950, Nizhny Novgorod, Russian Federation.
authors.forename: Daria Yu
authors.initials: DY
authors.lastname: Dzhons
authors.affiliation: Chemistry Department, Lobachevsky State University of Nizhny Novgorod, Gagarina pr. 23, Building 5, 603950, Nizhny Novgorod, Russian Federation.
authors.forename: Andrei V
authors.initials: AV
authors.lastname: Budruev
keywords: 1,5-electrocyclization; 2,1-benzisoxazolones; aryl azides; azepinones; nitrenes; photochemical cyclization