title: Nickel-catalysed denitrogenative alkyne insertion reactions of N-sulfonyl-1,2,3-triazoles.
abstract: N-Sulfonyl-1,2,3-triazoles reacted with alkynes in the presence of a nickel(0)/phosphine catalyst to give substituted pyrroles, with the extrusion of molecular nitrogen; the triazole moiety isomerised to an alpha-imino diazo species, and the denitrogenative addition to nickel(0) was followed by the insertion of alkynes and reductive elimination.
authors.affiliation: Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan.
authors.forename: Tomoya
authors.initials: T
authors.lastname: Miura
authors.forename: Motoshi
authors.initials: M
authors.lastname: Yamauchi
authors.forename: Masahiro
authors.initials: M
authors.lastname: Murakami
mesh_terms: D002384:Catalysis; D003500:Cyclization; D015394:Molecular Structure; D009532:Nickel; D009584:Nitrogen / Q000737:chemistry*; D013237:Stereoisomerism; D013450:Sulfones / Q000737:chemistry*; D014230:Triazoles / Q000737:chemistry*
chemical_list: D013450:Sulfones; D014230:Triazoles; D009532:Nickel; D009584:Nitrogen