title: A direct synthesis of selenophenes by Cu-catalyzed one-pot addition of a selenium moiety to (E,E)-1,3-dienyl bromides and subsequent nucleophilic cyclization.
abstract: An efficient protocol for the synthesis of selenophenes and selanyl selenophenes has been achieved by a simple one-pot reaction of 1,3-dienyl bromides and 1,3-dienyl-gem-dibromides respectively with KSeCN catalyzed by CuO nanoparticles. Several aryl, alkenyl, heteroaryl, and alkyl substituted selenophenes were obtained with a broad array of functional group tolerance. This is found to be a general methodology for chalcogenophenes being effective for the synthesis of thiophenes too.
authors: Department of Organic Chemistry, Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032, India.
authors: Pintu
authors: P
authors: Maity
authors: Debasish
authors: D
authors: Kundu
authors: Rajdip
authors: R
authors: Roy
authors: Brindaban C
authors: BC
authors: Ranu
mesh_terms: D002384:Catalysis; D003500:Cyclization; D006842:Hydrocarbons, Brominated / Q000737:chemistry*; D015394:Molecular Structure; D018036:Selenium Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D013876:Thiophenes / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D006842:Hydrocarbons, Brominated; D018036:Selenium Compounds; D013876:Thiophenes