title: An easy direct arylation of 5-pyrazolones.
abstract: A mild, efficient and catalytic ligand-free method for the direct arylation of 5-pyrazolones by Pd-catalyzed C-H bond activation is reported. The process smoothly proceeds and yields are moderate to excellent.
authors.affiliation: Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Gong
authors.forename: Yiwen
authors.initials: Y
authors.lastname: Yang
authors.forename: Zechao
authors.initials: Z
authors.lastname: Wang
authors.forename: Chunxiang
authors.initials: C
authors.lastname: Kuang
keywords: C–H bond activation; Pd(OAc)2; aryl halide; arylation; pyrazolone