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278289

Sigma-Aldrich

1-Phenylpyrazole

97%

Empirical Formula (Hill Notation):
C9H8N2
CAS Number:
Molecular Weight:
144.17
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

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

Packaging

5 g in glass bottle

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

235.4 °F - closed cup

Flash Point(C)

113 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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