7-bromo-2-(4-bromo-phenyl)-2,5-dihydro-pyrazolo[4,3-c]quinolin-3-one

Base Information

• Chemical Name: 7-bromo-2-(4-bromo-phenyl)-2,5-dihydro-pyrazolo[4,3-c]quinolin-3-one
• CAS No.: 236112-27-9
• Molecular Formula: C₁₆H₉Br₂N₃O
• Molecular Weight: 419.075
• Mol file: 236112-27-9.mol

Synonyms:7-bromo-2-(4-bromo-phenyl)-2,5-dihydro-pyrazolo[4,3-c]quinolin-3-one

Chemical Property of 7-bromo-2-(4-bromo-phenyl)-2,5-dihydro-pyrazolo[4,3-c]quinolin-3-one

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 7-bromo-2-(4-bromo-phenyl)-2,5-dihydro-pyrazolo[4,3-c]quinolin-3-one

There total 2 articles about 7-bromo-2-(4-bromo-phenyl)-2,5-dihydro-pyrazolo[4,3-c]quinolin-3-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: 84.0%

(4-bromophenyl)hydrazine (589-21-9) + ethyl 7-bromo-4-chloro-3-quinolinecarboxylate (206257-41-2) → 7-bromo-2-(4-bromo-phenyl)-2,5-dihydro-pyrazolo[4,3-c]quinolin-3-one (236112-27-9)

Guidance literature:

(4-bromophenyl)hydrazine; ethyl 7-bromo-4-chloro-3-quinolinecarboxylate; In toluene; for 3h;

With acetic acid; for 2h; Heating;

DOI:10.1081/NCN-120038009

Reference yield:

7-bromo-4-oxo-1,4-dihydroquinoline-3-carboxylic acid ethyl ester (208580-23-8,179943-57-8) → 7-bromo-2-(4-bromo-phenyl)-2,5-dihydro-pyrazolo[4,3-c]quinolin-3-one (236112-27-9)

Guidance literature:

Multi-step reaction with 2 steps

1.1: thionyl chloride / 17 h / Heating

2.1: toluene / 3 h

2.2: 84 percent / acetic acid / 2 h / Heating

With thionyl chloride; In toluene;

DOI:10.1081/NCN-120038009

Reference yield: 87.0%

1-O-acetyl-2,3,5-tri-O-benzoyl-β-D-ribofuranose (6974-32-9) + 7-bromo-2-(4-bromo-phenyl)-2,5-dihydro-pyrazolo[4,3-c]quinolin-3-one (236112-27-9) → 7-bromo-2-(4-bromophenyl)-5-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-2H-pyrazolo[4,3-c]quinolin-3(5H)-one (774586-02-6)

Guidance literature:

7-bromo-2-(4-bromo-phenyl)-2,5-dihydro-pyrazolo[4,3-c]quinolin-3-one; With chloro-trimethyl-silane; bis(trimethylsilyl)trifluoroacetamide; at 110 - 120 ℃; for 5h;

1-O-acetyl-2,3,5-tri-O-benzoyl-β-D-ribofuranose; With trimethylsilyl trifluoromethanesulfonate; In acetonitrile; at 20 ℃;

DOI:10.1081/NCN-120038009

upstream raw materials:

(4-bromophenyl)hydrazine

ethyl 7-bromo-4-chloro-3-quinolinecarboxylate

7-bromo-4-oxo-1,4-dihydroquinoline-3-carboxylic acid ethyl ester

Downstream raw materials:

7-bromo-2-(4-bromophenyl)-5-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-2H-pyrazolo[4,3-c]quinolin-3(5H)-one