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  • Title: Regioselective synthesis of 1-aryl-3,4-substituted/annulated-5-(methylthio)pyrazoles and 1-aryl-3-(methylthio)-4,5-substituted/annulated pyrazoles.
    Author: Peruncheralathan S, Khan TA, Ila H, Junjappa H.
    Journal: J Org Chem; 2005 Nov 25; 70(24):10030-5. PubMed ID: 16292836.
    Abstract:
    [reaction: see text] Highly efficient and regioselective synthesis of 1-aryl-3,4-substituted/annulated-5-(methylthio)pyrazoles and 1-aryl-3-(methylthio)-4,5-substituted/annulated pyrazoles has been reported via cyclocondensation of arylhydrazines with either alpha-oxoketene dithioacetals or beta-oxodithioesters.
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