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278289

Sigma-Aldrich

1-Phenylpyrazole

97%

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About This Item

Fórmula empírica (notación de Hill):
C9H8N2
Número de CAS:
1126-00-7
Peso molecular:
144.17
EC Number:
214-415-1
MDL number:
MFCD00003112
UNSPSC Code:
12352100
PubChem Substance ID:
24856799
NACRES:
NA.22

assay

97%

form

liquid

refractive index

n20/D 1.596 (lit.)

bp

141-142 °C/30 mmHg (lit.)

density

1.091 g/mL at 25 °C (lit.)

SMILES string

c1ccc(cc1)-n2cccn2

InChI

1S/C9H8N2/c1-2-5-9(6-3-1)11-8-4-7-10-11/h1-8H

InChI key

WITMXBRCQWOZPX-UHFFFAOYSA-N

General description

1-Phenylpyrazole undergoes cyclometallation with rhodium trichloride to yield rac-di(μ-chloro)tetrakis[2-(pyrazol-1-yl)phenyl-C1,N2′]dirhodium. The activation of the C-H bond of 1-phenylpyrazole autocatalyzed by the co-product HOAc was studied.

Application

1-Phenylpyrazole has been used:
  • in the preparation of 4,5-diphenylpyrazolo[1,5-a]quinoline, 1-(1,2,3,4-tetraphenylnaphthalen-5-yl)pyrazole and 1-(1,2,3,4,5,6,7,8-octaphenylanthracen-9-yl)pyrazole
  • as cyclometallated ligand in the preparation of new heteroleptic iridium(III) complexes

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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Sigma-Aldrich

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3-Methyl-1-phenyl-2-pyrazoline-5-one 99%

Sigma-Aldrich

M70800

3-Methyl-1-phenyl-2-pyrazoline-5-one

Nobuyoshi Umeda et al.
The Journal of organic chemistry, 76(1), 13-24 (2010-12-15)
The direct oxidative coupling of phenylazoles with internal alkynes proceeds efficiently in the presence of a rhodium catalyst and a copper oxidant accompanied by double or quadruple C-H bond cleavages. Thus, as a representative example, 4,5-diphenylpyrazolo[1,5-a]quinoline, 1-(1,2,3,4-tetraphenylnaphthalen-5-yl)pyrazole, and 1-(1,2,3,4,5,6,7,8-octaphenylanthracen-9-yl)pyrazole can
Jian-ning Yu et al.
Guang pu xue yu guang pu fen xi = Guang pu, 30(9), 2424-2427 (2010-11-26)
New heteroleptic iridium(III) complexes (ppz)2Ir(LX), which consist of two cyclometalated ligands ppz(1-phenylpyrazole) together with an ancillary ligand LX (LX= 2-(2'-hydroxylphenyl)benzothiazole (BTZ), 2-(3'-methyl-2'-hydroxylphenyl) benzothiazole (3-MeBTZ), 2-(4'-methyl-2'-hydroxylphenyl) benzothiazole (4-MeBTZ) and 2-(4'-Trifluoromethyl-2'hydroxylphenyl) benzothiazole (4-tfmBTZ)), were synthesized and characterized. The molecular structures and photophysical
Cyclometallated compounds: VII. X-Ray crystal structure of the product of cyclometallation of 1-phenylpyrazole with rhodium trichloride.
Steel PJ.
Journal of Organometallic Chemistry, 408(3), 395-402 (1991)
Indira Fabre et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 19(23), 7595-7604 (2013-04-19)
The activation of the C-H bond of 1-phenylpyrazole (2) and 2-phenyl-2-oxazoline (3) by [Ru(OAc)2(p-cymene)] is an autocatalytic process catalyzed by the co-product HOAc. The reactions are indeed faster in the presence of acetic acid and water but slower in the

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