نتایج جستجو برای: pyrazolone

تعداد نتایج: 399  

Journal: :Berichte der deutschen chemischen Gesellschaft 1911

2016
Mohammad Sayed Alam Dong-Ung Lee

A novel Schiff base derivative of 4-aminoantipyrine, that is, (E)-4-(2-methoxybenzylideneamino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one (MBA-dMPP), was synthesized and characterized by FT-IR, 1H-NMR, and EI-MS. Single-crystal X-ray diffraction data revealed MBA-dMPP adopts a trans configuration around its central C=N double bond, and forms orthorhombic crystals. XRD revealed that MBA-dMPP po...

Journal: :Journal of the American Chemical Society 1908

Journal: :Berichte der deutschen chemischen Gesellschaft 1905

2014
Maria ŞUTU APOTROSOAEI Ileana Chirita Elena Catalina Lupuşoru Ovidiu Oniga

of the PhD Thesis The Scientific Leader Prof.dr. Lenuţa PROFIRE

Journal: :iranian chemical communication 0
hemant chavan organic chemistry research laboratory, department of chemistry, rajaram college kolhapur, maharashtra, india datta survase department of chemistry, a.s.p. college devrukh, dist-ratnagiri, maharashtra, india-415804 sakharam dongare medicinal chemistry research laboratory, school of chemical science, solapur university solapur, maharashtra, india-413255 vasant helavi medicinal chemistry research laboratory, school of chemical science, solapur university solapur, maharashtra, india-413255 shreeram ganapure organic chemistry research laboratory, department of chemistry, rajaram college kolhapur, maharashtra, india

regioselective synthesis of highly functionalized pyranopyrazoles was achieved in excellent yield from phenyl pyrazolone, substituted aromatic aldehyde with nitroketene-n,s-acetal in the presence of indium trichloride as a versatile catalyst under reflux condition in ethanol-water mixture. all reactions preceeded within a short period of time with excellent purity. all of the synthesized compou...

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