936-53-8

Basic information

• Product Name: 1-PHENYL-4,5-DIHYDRO-1H-PYRAZOLE
• Synonyms: 1-PHENYL-4,5-DIHYDRO-1H-PYRAZOLE;1-Phenyl-2-pyrazoline
• CAS NO: 936-53-8
• Molecular Formula: C₉H₁₀N₂
• Molecular Weight: 146.1891
• Mol File: 936-53-8.mol
• Article Data: 6

Chemical Properties

• Melting Point: 52°C
• Boiling Point: 255.81°C (rough estimate)
• Appearance: /
• Density: 1.0689
• Refractive Index: 1.6015
• CAS DataBase Reference: 1-PHENYL-4,5-DIHYDRO-1H-PYRAZOLE(CAS DataBase Reference)
• NIST Chemistry Reference: 1-PHENYL-4,5-DIHYDRO-1H-PYRAZOLE(936-53-8)
• EPA Substance Registry System: 1-PHENYL-4,5-DIHYDRO-1H-PYRAZOLE(936-53-8)

Safety Data

• Hazardous Substances Data: 936-53-8(Hazardous Substances Data)

Usage

Synthesis Reference(s)

Synthesis, p. 1028, 1985 DOI: 10.1055/s-1985-31422

Upstream product

• 35267-14-2 N-phenylpyrazolidine 
• 1126-00-7 1-phenylpyrazole 
• 100-63-0 phenylhydrazine 
• 109-64-8 1,3-dibromo-propane 
• 107-02-8 acrolein 
• 142-28-9 1,3-Dichloropropane 
• 96-21-9 1,3-dibromo-2-hydroxypropane 
• 5469-66-9 propane-1,3-diol ditosylate 
• 59-88-1 phenylhydrazine hydrochloride 
• 62-53-3 aniline 

Downstream Products

• 2538-52-5 1,3-diphenyl-4,5-dihydro-1H-pyrazole 
• 49663-40-3 3-(4-bromo-phenyl)-1-phenyl-4,5-dihydro-1H-pyrazole 
• 20264-80-6 3-(4-chloro-phenyl)-1-phenyl-4,5-dihydro-1H-pyrazole 
• 1126-00-7 1-phenylpyrazole 
• 23429-68-7 1,1'-diphenyl-4,5,4',5'-tetrahydro-1H,1'H-[3,3']bipyrazolyl 
• 78369-87-6 1-phenyl-3-m-tolyl-4,5-dihydro-1H-pyrazole 
• 4742-01-2 N-(3-aminopropyl)aniline 
• 4747-46-0 1-phenyl-1H-pyrazole-3-carboxylic acid 
• 77393-38-5 1,1'-diphenyl-1H,1'H-[3,3']bipyrazolyl 
• 105257-97-4 3-phenyl-1-(4-phenylazo-phenyl)-4,5-dihydro-1H-pyrazole 
• 90915-04-1 1-phenyl-4,5-dihydro-1H-pyrazole-3-carbaldehyde 
• 1448427-11-9 1-(4-(4,5-dihydro-1H-pyrazol-1-yl)phenylsulfonyl)-4-methyl-1,2,3,4-tetrahydroquinoxaline 

Relevant articles and documents

Fe(III)-Catalyzed Aerobic Intramolecular N-N Coupling of Aliphatic Azides with Amines

An Fe(III)-catalyzed intramolecular N-N coupling of aliphatic azidoamines that forms diverse five- and six-membered semisaturated diazoheterocycles using air as an oxidant is reported, providing an alternative to hydrazine-based methods. Mechanistic studies suggest that a N-radical induced intramolecular homolytic substitution (SH2) is involved in ring closure. The power of this N-N bond-forming method is also demonstrated by using it as the final step in a total synthesis of (-)-newbouldine.

Synthesis, optical and nonlinear optical properties of new pyrazoline derivatives

We report on synthesis and optical properties of new organic compounds based on substituted pyrazole ring. The investigated pyrazoline derivatives (PRDs) exhibit efficient broadband photoluminescence which covers nearly whole visible spectrum. The experimental results are compared to quantum chemical calculations. Amplified spontaneous emission and photodegradation measurements were performed for hybrid systems based on selected PRDs doped into poly(methyl methacrylate) matrix proving the potential utility of such systems in lasing applications. Two-photon absorption (TPA) properties were characterized by the femtosecond Z-scan technique.

Microwave-assisted cyclocondensation of hydrazine derivatives with alkyl dihalides or ditosylates in aqueous media: Syntheses of pyrazole, pyrazolidine and phthalazine derivatives

Direct syntheses of 4,5-dihydro-pyrazole, pyrazolidine, and 1,2-dihydro-phthalazine derivatives via double-alkylation of hydrazines by alkyl dihalides or ditosylates were accomplished in aqueous media under microwave irradiation conditions; the environmen