SCHEME13: SYNTHESIS OF NANO STEROIDAL PYRAZOLONES
SCHEME 5: SYNTHESIS OF 2-ARYL-5-METHYL-2, 3-DIHYDRO-1H-3-PYRAZOLONES IN PRESENCE OF p-TSA
SCHEME15: SYNTHESIS OF UNSUBSTITUTED PYRAZOLONE DERIVATIVES
Kadam et al. 34 have been repoted a novel synthesis of 3-amino-4-(4I-substituted benzylidene) - 1H-pyrazol-5(4H)-one derivatives 72 and 3-amino-4-(4I-substitued benzylidene) - 4, 5 - dihydro-5-oxopyrazole-1-carbothioamide derivatives 73 by the reaction of substituted benzaldehyde/ heteroaldehyde 70, ethylcyano acetate 71 and thiosemicarbazide was heated in presence of PEG-400.
Ziarati et al. 42 have been reported simple and green process to prepare copper iodide in nano scale via sonication was carried out. Subsequently, this nanoparticles was used as an efficient catalyst for the synthesis of 2-aryl-5-methyl-2,3-dihydro-1H-3-pyrazolones 111 via four-component reaction of hydrazine 107, ethyl acetoacetate 108, aldehyde 109 and β-naphthol 110 in water under ultrasound irradiation.
1,3-Dimethyl-5-pyrazolone 2749-59-9 | TCI America
SCHEME 4: SYNTHESIS OF 4-[(5-HYDROXY-3-METHYL-1-PHENYL-1H-PYRAZOL-4-YL)-PHENYL-METHYL]-5-METHYL-2-PHEN-YL-1,2-DIHYDRO-PYRAZOL-3-ONES USING [HMIM]HSO4 CATALYST
Harikumaran Nair*, "Synthesis and spectral studies of some novel oxovanadium(IV) complexes of 2,3-dimethyl-1-phenyl-4-(2-hydroxy-5-chlorophenylazo) pyrazole-5-one",
1,3-Dimethyl-5-pyrazolone, CAS Number: 2749-59-9
Sudarsana Kumar, "Synthesis and characterisation of some new Cu(II) complexes of azo dyes derived from 1,2-dihydro-1,5-dimethyl-2-phenyl-4-amino-3-H-pyrazole-3-one",
Zang et al. 41 have been reported the synthesis of 4-[(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-phenyl-methyl] – 5 – methyl – 2 - phen-yl-1,2-dihydro-pyrazol-3-ones 106 through the condensation reaction of arylaldehydes 103 and 3-methyl-1-phenyl-5-pyrazolone 104 with Ionic liquid [HMIM]HSO4 catalyst 105 under ultrasonic irradiation at room temperature. The present methodology offers several advantages such as excellent yields, simple procedure and mild conditions.
1,3-Dimethyl-5-pyrazolone 2749-59-9 | TCI EUROPE N.V.
2,3-dimethyl-1-phenyl-5-pyrazolone | Sigma-Aldrich
SCHEME 2: SYNTHESIS OF 5-METHYL-2-[(2-OXO-2H-CHROMEN-3-YL)CARBONYL]-2,4-DIHYDRO-3H-PYRAZOL-3-ONE
CAS 2749-59-9 | UK supplier | 1,3-Dimethyl-5-pyrazolone
SCHEME 5: SYNTHESIS OF 2-ARYL-5-METHYL-2,3-DIHYDRO-1H-3-PYRAZOLONES USING CuI NANOPARTICLES
Synthesis of 1-(2,3-Dimethyl-1-phenyl-pyrazolone-5-yl …
Synthesis of malon (3-Cl-4-OCH3 , 2-OCH3-5-CH3) anilic acid hydrazide (1a, 1b).
1,3-Dimethyl-5-pyrazolone CAS#: 2749-59-9
Sivakumar et al. 39 have been reported an efficient synthesis of some Mannich base of 5-methyl-2-[(2-oxo-2H-chromen-3-yl) carbonyl]-2,4-dihydro-3H-pyrazol-3-one 95 have been described by using multicomponant with microwave techniques. Microwave assisted reactions showed that require shorter reaction time and good yield.
1,3-Dimethyl-5-pyrazolone | VWR
Antre et al. 40 have been reported various 4-(2-amino-6-(substituted)pyrimidin-4-yl)-3-methyl-1-(substituted)-1H-pyrazol-5(4H)-one derivatives 101 and their Schiff bases 102 were synthesized by the reaction of hydrazide 96 and ethylacetoacetate 97 to form pyrazolone derivatives 98. Compound 98 further react with acetyl chloride and prepared compound 99, therefore it has react with aromatic aldehyde and guanidine hydrochloride to gave pyrazolone derivatives 100 and 101. Afterthat pyrazolone derivatives 101 again react with aromatic aldehyde and formed pyrazolone Schiff base derivatives 102.
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Tu et al. 38 have been synthesized C-tethered bispyrazol-5-ols 89 via multicomponent domino reactions of acetylenedicarboxylates 86, phenylhydrazine 87 and aromatic aldehydes 88 under microwave irradiation.
Kumari Nisha, "Synthesis,Spectral and antimicrobial studies of some oxomolybdenum(V) and dioxomolybdenum(VI) complexes of a Schiff base derived from 1-phenyl-2,3-dimethyl-4-amino-5-pyrazolone..",
CAS No.60-80-0,3H-Pyrazol-3-one,1,2-dihydro-1,5-dimethyl …
Ghosh et al. 37 have been reported a glacial acetic acid catalyzed reaction for the combinatorial synthesis of highly functionalized benzylpyrazolyl coumarin 85 prepared by a green one-pot four-component reaction between aryl hydrazine/ hydrazine hydrate 81, ethyl acetoacetate 82, aromatic aldehydes 83 and 4-hydroxycoumarin 84 in water medium under refluxing conditions.
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