2001 pyrazole derivatives

pyrazole derivativesR 0180

49 - 088Microwave Assisted Synthesis of Novel Pyrazoles. — The pyrazoles(V) are synthesized by the reaction of the hydrazide (I) with the acetophenones(II) followed by reaction with the Vilsmeier–Haack reagent. The reactionrate and the yields in the final cyclocondensation step are enhanced by usingmicrowave irradiation compared to the conventional thermal method. —(KIDWAI, MAZAAHIR; ARYAL, RUPAK KUMAR; MISRA, PREETI; IndianJ. Chem., Sect. B: Org. Chem. Incl. Med. Chem. 40 (2001) 8, 717-718; Dep.Chem., Univ. Delhi, Delhi 110 007, India; EN)

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