thieno[2,3-d]pyridazine-4,7-diol

Base Information

• Chemical Name: thieno[2,3-d]pyridazine-4,7-diol
• CAS No.: 91533-21-0
• Molecular Formula: C6H4N2O2S
• Molecular Weight: 168.17300
• Hs Code.: 2934999090
• Mol file: 91533-21-0.mol

Synonyms:1,4-Dioxo-1,2,3,4-tetrahydro-thieno<2,3-d>pyridazin;5,6-Dihydro-thieno[2,3-d]pyridazin-4,7-dion;5,6-dihydro-thieno[2,3-d]pyridazin-4,7-dione;5,6-dihydro-thieno[2,3-d]pyridazine-4,7-dione;

Chemical Property of thieno[2,3-d]pyridazine-4,7-diol

Chemical Property:

• PSA: 94.48000
• LogP: 1.10250

Purity/Quality:

95% ^*data from raw suppliers

5,6-Dihydrothieno[2,3-d]pyridazine-4,7-dione ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of thieno[2,3-d]pyridazine-4,7-diol

There total 4 articles about thieno[2,3-d]pyridazine-4,7-diol 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: 89.0%

2,3-Thiophendicarbonsaeure-dimethylester (14300-68-6) → 5,6-dihydro-thieno[2,3-d]pyridazine-4,7-dione (91533-21-0)

Guidance literature:

With ethanol; hydrazine; for 2.5h; Heating / reflux;

Reference yield:

thiophene-2,3-dicarboxylic acid (1451-95-2) → 5,6-dihydro-thieno[2,3-d]pyridazine-4,7-dione (91533-21-0)

Guidance literature:

Multi-step reaction with 3 steps

1: acetyl chloride

2: acetone; aqueous hydrochloric acid

3: N₂H₄+H₂O

With hydrogenchloride; hydrazine hydrate; acetyl chloride; acetone;

DOI:10.1021/jo01130a003

Reference yield:

3-(methoxycarbonyl)thiophene-2-carboxylic acid (115777-73-6) → 5,6-dihydro-thieno[2,3-d]pyridazine-4,7-dione (91533-21-0)

Guidance literature:

With hydrazine hydrate;

DOI:10.1021/jo01130a003 DOI:10.1021/ja01620a031

upstream raw materials:

3-(methoxycarbonyl)thiophene-2-carboxylic acid

2,3-Thiophendicarbonsaeure-dimethylester

thiophene-2,3-dicarboxylic acid

2-thiophenylcarboxylic acid

Downstream raw materials:

4,7-dichlorothieno[2,3-d]pyridazine

7-chloro-4-(4-chlorophenylamino)thieno[2,3-d]pyridazine

4-[({4-[(4-chlorophenyl)amino]-thieno[2,3-d]pyridazin-7-yl}oxy)methyl]-2-pyridinecarboxamide

N-(1,3-benzothiazol-6-yl)-N-{4-[(4-bromophenyl)amino]thieno[2,3-d]pyridazin-7-yl}amine

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