Authors: JAYAROOPA PRABHASHANKAR, VASANTH KUMAR GOVINDAPPA, AJAY KUMAR KARIYAPPA
Abstract: Nitrile imines generated by the oxidative dehydrogenation of aromatic aldehyde phenylhydrazones with chloramine-T as a catalytic dehydrogenating agent were trapped in situ by 4-methoxy cinnamonitrile to afford 3,4-diaryl-1-phenyl-4,5-dihydro-1H-pyrazole-5-carbonitrile in moderate to good yields. The structures of the cycloadducts were confirmed by spectral studies and elemental analysis.
Keywords: Pyrazoles, nitrile imines, chloramine-T, dipolar, cycloaddition
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