2-(4-bromophenyl)-3,4-dimethyl-6-phenyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one

Base Information

• Chemical Name: 2-(4-bromophenyl)-3,4-dimethyl-6-phenyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one
• CAS No.: 132330-65-5
• Molecular Formula: C₁₉H₁₅BrN₄O
• Molecular Weight: 395.258
• Mol file: 132330-65-5.mol

Synonyms:2-(4-bromophenyl)-3,4-dimethyl-6-phenyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one

Chemical Property of 2-(4-bromophenyl)-3,4-dimethyl-6-phenyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 2-(4-bromophenyl)-3,4-dimethyl-6-phenyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one

There total 4 articles about 2-(4-bromophenyl)-3,4-dimethyl-6-phenyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 78.0%

ethyl 4-acetyl-1-(4-bromophenyl)-5-methyl-1H-pyrazole-3-carboxylate (96734-86-0) + phenylhydrazine (100-63-0) → 2-(4-bromophenyl)-3,4-dimethyl-6-phenyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one (132330-65-5)

Guidance literature:

With acetic acid; for 10h; Heating;

Reference yield: 76.0%

ethyl 1-(4-bromophenyl)-5-methyl-4-[1-(phenylhydrazinylidene)ethyl]-1H-pyrazole-3-carboxylate → 2-(4-bromophenyl)-3,4-dimethyl-6-phenyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one (132330-65-5)

Guidance literature:

With acetic acid; for 4h; Reflux;

DOI:10.1134/S1070428017010110

Reference yield:

bromo-(4-bromo-phenylhydrazono)-acetic acid ethyl ester (86380-96-3) → 2-(4-bromophenyl)-3,4-dimethyl-6-phenyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one (132330-65-5)

Guidance literature:

Multi-step reaction with 2 steps

1: 71 percent / EtONa / 17 h / Ambient temperature

2: 78 percent / acetic acid / 10 h / Heating

With sodium ethanolate; acetic acid;

upstream raw materials:

ethyl 4-acetyl-1-(4-bromophenyl)-5-methyl-1H-pyrazole-3-carboxylate

phenylhydrazine

bromo-(4-bromo-phenylhydrazono)-acetic acid ethyl ester

acetylacetone