title: Cobalt Catalyzed C-H and N-H Bond Annulation of Sulfonamide with Terminal and Internal Alkynes.
abstract: Chelate assisted cobalt catalyzed C-H and N-H annulation of aryl sulfonamide with terminal and internal alkynes is reported. Very high regioselectivity and excellent functional group tolerance were achieved using oxygen as a co-oxidant. The reaction is scalable under mild conditions.
authors.affiliation: Fine Chemical Laboratory, Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur, Uttar Pradesh, India.
authors.forename: Deepti
authors.initials: D
authors.lastname: Kalsi
authors.affiliation: Fine Chemical Laboratory, Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur, Uttar Pradesh, India.
authors.forename: Basker
authors.initials: B
authors.lastname: Sundararaju