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Metal-free and highly regioselective synthesis of N-heteroaryl substituted pyrazoles from α,β-unsaturated N-tosylhydrazones and heteroaryl chlorides

HeterocyclicHeteroaryl ChloridesNatural SciencesDiversity-oriented Synthesisβ-Unsaturated N-tosylhydrazonesOrganic ChemistryRegioselective SynthesisChemistryHeterocycle ChemistrySynthetic Chemistry