title: Synthesis of 2H-indazoles by the [3 + 2] cycloaddition of arynes and sydnones.
abstract: A rapid and efficient synthesis of 2H-indazoles has been developed, which involves the [3 + 2] dipolar cycloaddition of arynes and sydnones. The process proceeds under mild reaction conditions in good to excellent yields.
authors.affiliation: Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Henan University, Jinming Campus, Kaifeng, Henan 475004, China PR.
authors.forename: Chunrui
authors.initials: C
authors.lastname: Wu
authors.forename: Yuesi
authors.initials: Y
authors.lastname: Fang
authors.forename: Richard C
authors.initials: RC
authors.lastname: Larock
authors.forename: Feng
authors.initials: F
authors.lastname: Shi
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D003500:Cyclization; D007191:Indazoles / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D013237:Stereoisomerism; D013558:Sydnones / Q000737:chemistry*
chemical_list: D000480:Alkynes; D007191:Indazoles; D013558:Sydnones
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