41927-23-5

Basic information

• Product Name: 3H-Pyrazol-3-one, 4-bromo-2,4-dihydro-5-methyl-2-phenyl-
• Synonyms: 4-bromo-3-methyl-1-phenyl-pyrazole-5-one;4-bromo-5-methyl-2-phenyl-1,2-dihydro-pyrazol-3-one;4-bromo-3-methyl-1-phenyl-2-pyrazolin-5-one;4-bromo-3-methyl-1-phenyl-pyrazolin-5-one;4-bromo-3-methyl-1-phenylpyrazol-5-one;4-bromo-3-methyl-1-phenylpyrazole;4-bromo-3-methyl-1-phenyl-5-pyrazolone;4-bromo-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one
• CAS NO: 41927-23-5
• Molecular Formula: C10H9BrN2O
• Molecular Weight: 253.098
• Mol File: 41927-23-5.mol
• Article Data: 7

Chemical Properties

• CAS DataBase Reference: 3H-Pyrazol-3-one, 4-bromo-2,4-dihydro-5-methyl-2-phenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 3H-Pyrazol-3-one, 4-bromo-2,4-dihydro-5-methyl-2-phenyl-(41927-23-5)
• EPA Substance Registry System: 3H-Pyrazol-3-one, 4-bromo-2,4-dihydro-5-methyl-2-phenyl-(41927-23-5)

Safety Data

• Hazardous Substances Data: 41927-23-5(Hazardous Substances Data)

Upstream product

• 100-63-0 phenylhydrazine 
• 89-25-8 edaravone 

Downstream Products

• 89334-96-3 1-phenyl-3-methyl-4-yl-(1'-phenyl-3'-methyl-2'-pyrazolin-5'thione)-2-pyrazolin-5-one 
• 164404-37-9 5-Imino-3-methyl-1-phenyl-1H-pyrazolo[3,4-d]thiazol-6-ylamine 
• 164404-39-1 5-[(Z)-tert-Butylimino]-3-methyl-1-phenyl-1H-pyrazolo[3,4-d]thiazol-6-ylamine 
• 297158-57-7 3-Methyl-1-phenyl-1H-pyrazolo[3,4-d]thiazol-5-ylamine 
• 207606-85-7 3-methyl-1-phenyl-2-pyrazoline-5-one-4-spirocyclopropanetetracarbonitrile 
• 252937-68-1 5-amino-3-methyl-1-phenyl-1H-pyrazolo[4,5-d][1,3]thiazole 
• 252937-67-0 5-amino-3-methyl-1-phenyl-1H-pyrazolo[4,5-d][1,3]oxazole 
• 316188-75-7 2-hydrazino-5-phenyl-7-methyl-4H-pyrazolo[5,4-e]-1,3,4-thiadiazine 
• 503616-60-2 4-ethoxycarbonyl-3,5-dimethyl-1-phenyl-thieno[2,3-b]pyrazole 
• 503616-61-3 4-ethoxycarbonyl-3,5-dimethyl-1-phenyl-pyrrolo[2,3-b]pyrazole 
• 69560-57-2 2-(2,4-dinitro-phenyl)-5,5'-dimethyl-2'-phenyl-2H,2'H-[4,4']bipyrazolylidene-3,3'-dione 
• 6334-24-3 5,5'-dimethyl-2,2'-diphenyl-2H,2'H-[4,4']bipyrazolylidene-3,3'-dione 

Relevant articles and documents

Asymmetric Construction of Bispiro-Cyclopropane-Pyrazolones via a [2+1] Cyclization Reaction by Dipeptide-Based Phosphonium Salt Catalysis

We reported herein an efficient alternative for asymmetric synthesis of structurally complicated chiral bispiro-cyclopropane-pyrazolones via dipeptide-based phosphonium salt catalyzed [2+1] cyclization of 2,3-dioxopyrrolidines and halogenated pyrazolones. With this catalytic asymmetric protocol, a broad range of bispiro heterocyclic compounds bearing a pyrazolone unit were prepared in high yields with excellent diastereo- and enatioselectivities. Of note, this transformation proceeds in a really short time under mild reaction conditions. (Figure presented.).

With herbicidal active pyrazole ether compounds and the use thereof

The invention relates to the technical field of herbicides, and particularly discloses a pyrazole ether compound with herbicidal activity and application thereof. The pyrazole ether compound with the herbicidal activity is a general-formula compound, and the specification specifically discloses 12 kinds of compounds. An experiment result shows that the general-formula compound has high biological activity on weeds and it is hopeful that the pyrazole ether compound serves as herbicide in agriculture and other fields.

New synthetic methods: Part I - Regioselective 1, 2-transposition of carbonyl group in carbocyclic and heterocyclic ketones

A convenient and simple synthetic method for 1, 2- transposition of keto group in pyrazol-5-ones, indan-1,3-dione and benzofuran-3-one is described.