In the present study, starting compound 4 was prepared by deamination of compound 2 in the presence of hypophosphorous acid and sodium nitrite. Treatment of compound 4 with ethyl bromoacetate produced ethyl[3-(4-chlorophenyl)-5-(4-methoxybenzyl)-4H-1,2,4-triazol-4-yl]acetate (5), which was converted to the hydrazide derivative (6) by treatment with hydrazine hydrate. The reaction of compound 6 ...

This article presents the suitable chemical method for preparation of graphene oxide nanosheets. In order to examine the effects of HNO3/H2SO4 ratio on interlayer spacing and its comparison, the oxidation of graphite with HNO3 and H2SO4 in 1:2 and 1:3 volume ratios was done. Based on the reaction time and interlayer spacing, it was found that the optimum results were obtained when reaction was ...

Triazole and itís derivatives are noteworthy for their physiological and biological importance. They paved the attention of medicinal chemist due to their wide range of biological activities like anti-inflammatory (1ñ5), antibacterial (6ñ8), anticonvulsant (9), antifungal (10ñ14) and anticancerous (15) etc. In view of above facts and inspired by the research going on triazole and its derivative...

In this investigation the reaction of cyclohexanone 1 with benzaldehyde 2 yielded (E)-2benzylidenecyclohexanone 3, which on reaction with 3-oxo-N-phenylbutanamide afforded 1-(1, 4, 5, 6, 7, 8-hexahydro-2-hydroxy-1, 4-diphenylquinolin-3-yl) ethanone.4. While the treatment of 4 with ethylbromoacetate and bromophenylethanone afforded the compounds 5 and 6 respectively. However, treatment of 4 with...

Treatment of 2,3-diaryloxirane-2,3-dicarbonitriles 1a-c with different nitrogen nucleophiles, e.g., hydrazine, methyl hydrazine, phenyl hydrazine, hydroxylamine, thiosemicarbazide, and/or 2-amino-5-phenyl-1,3,4-thiadiazole, afforded pyrazole, isoxazole, pyrrolotriazine, imidazolothiadiazole derivatives 2-5, respectively. Reacting pyrazoles 2a-c with aromatic aldehydes and/or methyl glycinate pr...

We present an efficient procedure for the synthesis of thirty-six N₁,N₄-substituted thiosemicarbazones, including twenty-five ones that are reported for the first time, using a microwave-assisted methodology for the reaction of thiosemicarbazide intermediates with aldehydes in the presence of glacial acetic acid in ethanol and under solvent free conditions. Overall reaction times (20-40 min whe...

The synthesis of novel pyrazole derivatives and investigations of their chemical and biological behavior have gained more importance in recent decades for biological, medicinal, and agricultural reasons. Concerning the attempt to synthesize some novel pyrazole and fused pyrazole derivatives from 4-benzoyl5-phenyl-2,3-furandione 1 and various hydrazines or hydrazones, the synthesis of 4-benzoyl-...

Nicotinic acid containing pyridine nucleus having side chain at third position gives the significant effect on toxicity to the insects. Therefore, we have reported the synthesis of some nicotinic acid derivatives and their insecticidal activities. The strategy employed for the synthesis of desired nicotinic acid derivatives involved esterification of nicotinic acid. The methyl nicotinate get de...