- Turkish Journal of Chemistry
- Vol: 37 Issue: 5
- Synthesis of 3,4-diaryl-1-phenyl-4,5-dihydro-1H -pyrazole-5-carbonitriles via 1,3-dipolar cycloaddit...
Synthesis of 3,4-diaryl-1-phenyl-4,5-dihydro-1H -pyrazole-5-carbonitriles via 1,3-dipolar cycloaddition reactions
Authors : Jayaroopa Prabhashankar, Vasanth Kumar Govindappa, Ajay Kumar Kariyappa
Pages : 853-857
Doi:10.3906/kim-1209-52
View : 10 | Download : 4
Publication Date : 9999-12-31
Article Type : Makaleler
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