Detail of "6123-63-3"

CAS Number:
6123-63-3
Name:
Ethanone,1-(5-methyl-1-phenyl-1H-pyrazol-4-yl)-
Molecular Structure:
Formula:
C₁₂H₁₂N₂O
Molecular Weight:
200.24
Synonyms:
Ketone,methyl 5-methyl-1-phenylpyrazol-4-yl (8CI);1-(5-Methyl-1-phenyl-1H-pyrazol-4-yl)ethanone;1-Phenyl-4-acetyl-5-methylpyrazole;4-Acetyl-5-methyl-1-phenylpyrazole;NSC 140728;
EINECS:
228-091-4
Density:
1.11 g/cm³
Melting Point:
103-105°C
Boiling Point:
328.9 °C at 760 mmHg
Flash Point:
152.7 °C
Risk Codes:
36/37/38
Safety:
26-36/37/39 Details

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Syntheses of pyrazole monomers: Syntheses of pyrazole monomers. Simionescu, Cristofor; Comanita, Eugenia; Vata, Mihai; Daranga, Mihai (Dep. Org. Macromol. Chem., Polytech. Inst., Iasi, Rom.). Angew. Makromol. Chem., 62(1), 135-44 (English) 1977. CODEN: ANMCBO. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) Section cross-reference(s): 27 (1-Phenyl-5-methyl-4-pyrazolyl)acetylene (I) [63228-05-7] was prepd. by treatment of 1-phenyl-4-acetyl-5-methylpyrazole [6123-63-3] with Vilsmeier complex; the first step of the reaction involves the formation of .beta.-(1-phenyl-5-methyl-4-pyrazolyl)-.beta.-chloroacrolein [63263-89-8] which in turn suffers dechloroformylation to give I. Polymn. of I with PdCl2 gave an oligomer (II) [63228-06-8] which did not give an EPR signal at room temp. Treatment of II with chloranil gave acharge-transfer complex [63228-07-9], the EPR spectra of which are given.