2515-46-0

Basic information

• Product Name: 1H-Pyrazole, 4,5-dihydro-3-methyl-1,5-diphenyl-
• CAS NO: 2515-46-0
• Molecular Formula: C16H16N2
• Molecular Weight: 236.316
• Mol File: 2515-46-0.mol
• Article Data: 12

Chemical Properties

• CAS DataBase Reference: 1H-Pyrazole, 4,5-dihydro-3-methyl-1,5-diphenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1H-Pyrazole, 4,5-dihydro-3-methyl-1,5-diphenyl-(2515-46-0)
• EPA Substance Registry System: 1H-Pyrazole, 4,5-dihydro-3-methyl-1,5-diphenyl-(2515-46-0)

Safety Data

• Hazardous Substances Data: 2515-46-0(Hazardous Substances Data)

Usage

Derivative of pyrazole

The compound is a derivative of pyrazole, a five-membered heterocyclic compound containing two nitrogen atoms.

Methyl and phenyl groups

The structure of the compound includes a methyl group and two phenyl groups, which give it unique chemical and physical properties.

Applications in organic chemistry, pharmaceuticals, and materials science

The compound has diverse reactivity and potential for forming complex molecular structures, making it useful in various fields.

Hazards associated with handling and storage

The compound may have certain hazards associated with its handling and storage, and it is important to use and handle it with care and according to safety guidelines.

Upstream product

• 22921-89-7 1-(4-phenylbut-3-en-2-ylidene)-2-phenylhydrazone 
• 71087-62-2 3-methyl-1-phenyl-1H-benzo[4,5]thieno[3,2-c]pyrazole 4,4-dioxide 
• 100-63-0 phenylhydrazine 
• 122-57-6 1-Phenylbut-1-en-3-one 
• 100-52-7 benzaldehyde 
• 59-88-1 phenylhydrazine hydrochloride 
• 1896-62-4 (E)-benzalacetone 
• 61898-90-6 4-deuterio-4-phenylbutan-2-one 
• 2550-26-7 4-Phenyl-2-butanone 
• 1381772-06-0 (E)-1-phenyl-2-(4-phenylbutan-2-ylidene)hydrazine 
• 1381772-45-7 (E)-1-(2-chloro-4-phenylbutan-2-yl)-2-phenyldiazene 
• 1608-03-3 (E)-but-1-en-3-yn-1-ylbenzene 
• 14371-10-9 (E)-3-phenylpropenal 
• 858006-58-3 3-methyl-1-phenyl-1H-benzo[4,5]thieno[3,2-c]pyrazole 

Downstream Products

• 95834-04-1 C₁₇H₁₆ClN₃O₃S 
• 105257-95-2 [4-(3-Methyl-5-phenyl-4,5-dihydro-pyrazol-1-yl)-phenyl]-(4-nitro-phenyl)-diazene 
• 105257-93-0 [4-(3-Methyl-5-phenyl-4,5-dihydro-pyrazol-1-yl)-phenyl]-phenyl-diazene 
• 105257-92-9 [4-(3-Methyl-5-phenyl-4,5-dihydro-pyrazol-1-yl)-phenyl]-p-tolyl-diazene 
• 105257-91-8 (4-Methoxy-phenyl)-[4-(3-methyl-5-phenyl-4,5-dihydro-pyrazol-1-yl)-phenyl]-diazene 
• 105257-94-1 (4-Chloro-phenyl)-[4-(3-methyl-5-phenyl-4,5-dihydro-pyrazol-1-yl)-phenyl]-diazene 
• 79913-08-9 2-[4-(3-Methyl-5-phenyl-4,5-dihydro-pyrazol-1-yl)-phenyl]-4-phenyl-[1,3]dithiol-1-ylium; iodide 
• 81400-89-7 C₃₉H₃₆N₄ 
• 3729-90-6 3-methyl-1,5-diphenyl-1H-pyrazole 
• 113685-75-9 C₃₂H₃₀N₄ 
• 29475-88-5 trans-2-styrylindole 
• 122-57-6 1-Phenylbut-1-en-3-one 
• 92-87-5 p,p'-diaminobiphenyl 
• 1896-62-4 (E)-benzalacetone 

Relevant articles and documents

Unexpected ring opening of pyrazolines with activated alkynes: synthesis of 1H-pyrazole-4,5-dicarboxylates and chromenopyrazolecarboxylates

1H-Pyrazole-4,5-dicarboxylates and chromenopyrazole carboxylates were prepared by reacting pyrazolines with activated alkynes under neat conditions without a catalyst. The products were formed via unexpected ring opening of pyrazolines with the elimination of styrene/ethylene. These types of transformations are unknown and the products formed were confirmed using their spectral/analytical data. In addition, the structures of compounds 5e and 5n were confirmed by single-crystal X-ray analysis. Control experiments were conducted to support the proposed reaction mechanism.

Ultrasound assisted synthesis of 1,5-diaryl and 1,3,5-triaryl-2-pyrazolines by using KOH/EtOH system with Cu(I) catalyst

1,5-Diaryl-2-pyrazolines and 1,3,5-triaryl-2-pyrazolines were synthesized in alcoholic potassium hydroxide in high yields within 1-6 min under ultrasound irradiation at room temperature.

Mechanism and Dynamics of Intramolecular C-H Insertion Reactions of 1-Aza-2-azoniaallene Salts

The 1-aza-2-azoniaallene salts, generated from α-chloroazo compounds by treatment with halophilic Lewis acids, undergo intramolecular C-H amination reactions to form pyrazolines in good to excellent yields. This intramolecular amination occurs readily at both benzylic and tertiary aliphatic positions and proceeds at an enantioenriched chiral center with retention of stereochemistry. Competition experiments show that insertion occurs more readily at an electron-rich benzylic position than it does at an electron-deficient one. The C-H amination reaction occurs only with certain tethers connecting the heteroallene cation and the pendant aryl groups. With a longer tether or when the reaction is intermolecular, electrophilic aromatic substitution occurs instead of C-H amination. The mechanism and origins of stereospecificity and chemoselectivity were explored with density functional theory (B3LYP and M06-2X). The 1-aza-2-azoniaallene cation undergoes C-H amination through a hydride transfer transition state to form the N-H bond, and the subsequent C-N bond formation occurs spontaneously to generate the heterocyclic product. This concerted two-stage mechanism was shown by IRC and quasi-classical molecular dynamics trajectory studies. (Chemical Equation Presented).