title: Pd-catalyzed tandem C-H azidation and N-N bond formation of arylpyridines: a direct approach to pyrido[1,2-b]indazoles.
abstract: A novel Pd-catalyzed nitrogenation of arylpyridines via C-H azidation has been developed. Direct C-N and N-N formations are achieved for this N-atom incorporation transformation using azides as the N-atom source. This method provides an alternatively concise approach for the construction of bioactively important pyrido[1,2-b]indazoles.
authors.affiliation: State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China.
authors.forename: Qing-Zhong
authors.initials: QZ
authors.lastname: Zheng
authors.forename: Peng
authors.initials: P
authors.lastname: Feng
authors.forename: Yu-Feng
authors.initials: YF
authors.lastname: Liang
authors.forename: Ning
authors.initials: N
authors.lastname: Jiao
mesh_terms: D001386:Azides / Q000737:chemistry*; D002384:Catalysis; D006860:Hydrogen Bonding; D007191:Indazoles / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D010165:Palladium / Q000737:chemistry*; D011725:Pyridines / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D001386:Azides; D007191:Indazoles; D011725:Pyridines; C585760:pyrido(1,2-b)indazole; D010165:Palladium