title: From N-benzoylpyridinium imides to pyrazolo[1,5-a]pyridines: a mechanistic discussion on a stoichiometric Cu protocol.
abstract: A Cu-mediated preparation of 2-substitiuted pyrazolo[1,5-a]pyridines from N-benzoylpyridinium imides and terminal alkynes is described using stoichiometric Cu(OAc)2 as both the mediator and the oxidant. Extensive DFT calculations suggest a Cu(III) intermediate via disproportionation of Cu(II).
authors: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China.
authors: Lin
authors: L
authors: Ling
authors: Jingqing
authors: J
authors: Chen
authors: Jiahui
authors: J
authors: Song
authors: Yuhai
authors: Y
authors: Zhang
authors: Xinqian
authors: X
authors: Li
authors: Lijuan
authors: L
authors: Song
authors: Feng
authors: F
authors: Shi
authors: Yuxue
authors: Y
authors: Li
authors: Chunrui
authors: C
authors: Wu
mesh_terms: D003300:Copper / Q000737:chemistry*; D007094:Imides / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D011725:Pyridines / Q000737:chemistry*; D011726:Pyridinium Compounds / Q000737:chemistry*; D011789:Quantum Theory
chemical_list: D007094:Imides; D011725:Pyridines; D011726:Pyridinium Compounds; D003300:Copper