1,3-Dioxo-2,7-diphenyl-7-thiophen-2-yl-2,3-dihydro-1H,7H-pyrazolo[1,2-a][1,2,4]triazole-5,6-dicarboxylic acid dimethyl ester

Base Information

• Chemical Name: 1,3-Dioxo-2,7-diphenyl-7-thiophen-2-yl-2,3-dihydro-1H,7H-pyrazolo[1,2-a][1,2,4]triazole-5,6-dicarboxylic acid dimethyl ester
• CAS No.: 83989-85-9
• Molecular Formula: C₂₅H₁₉N₃O₆S
• Molecular Weight: 489.508
• Mol file: 83989-85-9.mol

Synonyms:

Chemical Property of 1,3-Dioxo-2,7-diphenyl-7-thiophen-2-yl-2,3-dihydro-1H,7H-pyrazolo[1,2-a][1,2,4]triazole-5,6-dicarboxylic acid dimethyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 1,3-Dioxo-2,7-diphenyl-7-thiophen-2-yl-2,3-dihydro-1H,7H-pyrazolo[1,2-a][1,2,4]triazole-5,6-dicarboxylic acid dimethyl ester

There total 3 articles about 1,3-Dioxo-2,7-diphenyl-7-thiophen-2-yl-2,3-dihydro-1H,7H-pyrazolo[1,2-a][1,2,4]triazole-5,6-dicarboxylic acid dimethyl ester 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: 60.0%

C19H13N3O2S (82820-10-8) + dimethyl acetylenedicarboxylate (762-42-5) → 1,3-Dioxo-2,7-diphenyl-7-thiophen-2-yl-2,3-dihydro-1H,7H-pyrazolo[1,2-a][1,2,4]triazole-5,6-dicarboxylic acid dimethyl ester (83989-85-9)

Guidance literature:

In benzene; for 2h; Heating;

Reference yield:

phenyl(thiophen-2-yl)diazomethane (52579-45-0) → 1,3-Dioxo-2,7-diphenyl-7-thiophen-2-yl-2,3-dihydro-1H,7H-pyrazolo[1,2-a][1,2,4]triazole-5,6-dicarboxylic acid dimethyl ester (83989-85-9)

Guidance literature:

Multi-step reaction with 2 steps

1: 76 percent / diethyl ether / Ambient temperature

2: 60 percent / benzene / 2 h / Heating

In diethyl ether; benzene;

Reference yield:

4-Phenyl-1,2,4-triazolidine-3,5-dione (4233-33-4) → 1,3-Dioxo-2,7-diphenyl-7-thiophen-2-yl-2,3-dihydro-1H,7H-pyrazolo[1,2-a][1,2,4]triazole-5,6-dicarboxylic acid dimethyl ester (83989-85-9)

Guidance literature:

Multi-step reaction with 2 steps

1: 76 percent / diethyl ether / Ambient temperature

2: 60 percent / benzene / 2 h / Heating

In diethyl ether; benzene;

upstream raw materials:

C₁₉H₁₃N₃O₂S

dimethyl acetylenedicarboxylate

phenyl(thiophen-2-yl)diazomethane

4-Phenyl-1,2,4-triazolidine-3,5-dione