33064-22-1

Upstream product

• 91869-67-9 N-(α-methyl-4-bromobenzylidenamino)-4,6-diphenyl-2-pyridone 
• 73387-60-7 1-(4-bromophenyl)-3-(dimethylamino)prop-2-en-1-one 
• 100-63-0 phenylhydrazine 
• 91869-64-6 1-[(E)-1-(4-Bromo-phenyl)-3-dimethylamino-prop-2-en-(E)-ylideneamino]-4,6-diphenyl-1H-pyridin-2-one 
• 99-90-1 para-bromoacetophenone 
• 91869-73-7 1-[1-(4-Bromo-phenyl)-3-(phenyl-hydrazono)-prop-(E)-ylideneamino]-4,6-diphenyl-1H-pyridin-2-one 

Relevant academic research and scientific papers

Novel crown ether functionalized imidazolium-based acidic ionic liquid catalyzed synthesis of pyrazole derivatives under solvent-free conditions

Abstract An innovatively designed novel crown ether functionalized imidazolium-based reusable acidic ionic liquid [crown ether MIm] [HSO4] has been efficiently implemented for the synthesis of pyrazole derivatives using various substituted enaminones, hydrazine hydrate and phenyl hydrazine under solvent-free conditions. Structural novelty and task efficiency of the catalyst, high yields of desired products, greener approach attributing high atom economy and solvent-free conditions render this protocol suitable to cope with the current demand in contemporary organic chemistry. The inventive idea of utilizing crown ether functionalized ionic liquid as a catalyst was for the first time demonstrated in this protocol.

New Synthesis of Pyrazole and Isoxazole Derivatives

A convenient synthesis of 5-aryl-1-phenylpyrazoles and 5-arylisoxazoles, from readily available ketimine 1 dimethylformamide dimethylacetal and phenylhydrazine or hydroxylamine, is described.