title: Photoinduced intramolecular cyclization of o-ethenylaryl isocyanides with organic disulfides mediated by diphenyl ditelluride.
abstract: Photoinduced reaction of o-ethenylaryl isocyanides with organic disulfides in the presence of diphenyl ditellurides affords the corresponding bisthiolated indole derivatives via a radical cyclization process. The cyclization can proceed at room temperature upon visible-light irradiation and exhibits good tolerance to functional groups. Several organic disulfides also can be employed for this cyclization, and the corresponding bisthiolated indole derivatives are obtained selectively. In addition, the photoinduced reaction of o-ethenylaryl isocyanides with bis(2-aminophenyl) disulfide affords tetracyclic compounds in one portion.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan.
authors.forename: Takenori
authors.initials: T
authors.lastname: Mitamura
authors.forename: Kimiyo
authors.initials: K
authors.lastname: Iwata
authors.forename: Akiya
authors.initials: A
authors.lastname: Ogawa
mesh_terms: D001555:Benzene Derivatives / Q000737:chemistry*; D052160:Benzothiazoles / Q000737:chemistry; D002384:Catalysis; D003500:Cyclization; D009570:Nitriles / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D055668:Photochemical Processes; D011799:Quinazolines / Q000737:chemistry
chemical_list: D001555:Benzene Derivatives; D052160:Benzothiazoles; D009570:Nitriles; D009942:Organometallic Compounds; D011799:Quinazolines; C434247:diphenylditelluride; C005465:benzothiazole