title: Ruthenium-catalyzed alkyne annulations with substituted 1H-pyrazoles by C-H/N-H bond functionalizations.
abstract: Cationic ruthenium(II) complexes allowed for highly efficient oxidative annulations of aryl- and alkyl-substituted alkynes by 5-aryl-1H-pyrazoles. The C-H/N-H bond functionalization strategy furthermore proved applicable to the high-yielding activation of heteroaryl as well as alkenyl C-H bonds.
authors.affiliation: Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstrasse 2, 37077 Göttingen, Germany.
authors.forename: Wenbo
authors.initials: W
authors.lastname: Ma
authors.forename: Karolina
authors.initials: K
authors.lastname: Graczyk
authors.forename: Lutz
authors.initials: L
authors.lastname: Ackermann