title: Synthesis of aminopyrazoles from sydnones and ynamides.
abstract: Aminopyrazoles are prepared from readily accessible sydnones and sulfonyl ynamides using either a copper-mediated sydnone alkyne cycloaddition (CuSAC) or in situ generated strained cyclic ynamides.
authors.affiliation: Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany. braese@kit.edu.
authors.forename: T
authors.initials: T
authors.lastname: Wezeman
authors.forename: J
authors.initials: J
authors.lastname: Comas-Barceló
authors.forename: M
authors.initials: M
authors.lastname: Nieger
authors.forename: J P A
authors.initials: JP
authors.lastname: Harrity
authors.forename: S
authors.initials: S
authors.lastname: Bräse