3514-11-2

Basic information

• Product Name: 3H-Pyrazol-3-one, 1,2-dihydro-1,2-dimethyl-
• Synonyms: 1,2-Dimethyl-1,2-dihydro-pyrazol-3-one;1,2-Dimethyl-pyrazolon-(3);1,2-dimethylpyrazol-4-in-3-one;1,2-Dimethyl-pyrazolon-(5);1,2-Dimethyl-Δ4-pyrazolinon-(3);1,2-Dimethyl-pyrazol-4-in-3-on
• CAS NO: 3514-11-2
• Molecular Formula: C5H8N2O
• Molecular Weight: 112.13000
• Mol File: 3514-11-2.mol
• Article Data: 1

Chemical Properties

• Melting Point: 72 - 73 °C
• CAS DataBase Reference: 3H-Pyrazol-3-one, 1,2-dihydro-1,2-dimethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 3H-Pyrazol-3-one, 1,2-dihydro-1,2-dimethyl-(3514-11-2)
• EPA Substance Registry System: 3H-Pyrazol-3-one, 1,2-dihydro-1,2-dimethyl-(3514-11-2)

Safety Data

• Hazardous Substances Data: 3514-11-2(Hazardous Substances Data)

Upstream product

• 186581-53-3 diazomethane 
• 137-45-1 1,2-dihydropyrazol-3-one 

Relevant articles and documents

1,2,3-Triazines, V1: Lithiation of 1,2,3-triazines

5-Ethoxy-1,2,3-triazine (15) can be mono- and dilithiated and the lithio-1,2,3-triazines (16, 17) were reacted with aldehydes to give 18a-c, 19a-c, 20a-c and 21a-c. 18-21 can be oxidized to give the benzoyl-1,2,3- triazines 22a-c, 23c and 24a-c. Condensation of 24c with hydrazine afforded the pyrazolo[4.3-d]1,2,3-triazine 25 and 24a-c with ethylene diamine afforded the 1,2,3-triazino[5,4-e][1,4]diazepines 27a-c. 4-Methoxy-1,2,3-triazine (12) forms as well the 5- as the 6-lithio-4-methoxy-1,2,3-triazine (28a,b), whose reaction with benzaldehyde gave the 5- and 6-(α-hydroxybenzyl)-4,methoxy- 1,2,3-triazines (29a,b), respectively.