Hypervalent Iodine in Synthesis: A Novel Two-Step Procedure for the Synthesis of New Derivatives of 1H-Imidazo[1,2-b]pyrazole by the Cyclocondensation Between 5-Amino-4-cyano-3-phenyl-1H-pyrazole and α-Tosyloxyacetophenones or α-Haloacetophenones.

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