4,7-DIHYDROXYCOUMARIN

Base Information

• Chemical Name: 4,7-DIHYDROXYCOUMARIN
• CAS No.: 1983-81-9
• Molecular Formula: C9H6 O4
• Molecular Weight: 178.144
• Hs Code.: 2932209090
• Mol file: 1983-81-9.mol

Synonyms:Coumarin,4,7-dihydroxy- (6CI,7CI,8CI); 4,7-Dihydroxy-2-oxo-2H-1-benzopyran;4,7-Dihydroxycoumarin; NSC 136214

Chemical Property of 4,7-DIHYDROXYCOUMARIN

Chemical Property:

• Vapor Pressure: 0mmHg at 25°C
• Melting Point: 280-281℃ (methanol )
• Boiling Point: 390°Cat760mmHg
• PKA: 4.50±1.00(Predicted)
• Flash Point: 166.5°C
• PSA: 70.67000
• Density: 1.612g/cm³
• LogP: 1.20420
• Storage Temp.: 2-8°C

Purity/Quality:

97% ^*data from raw suppliers

4,7-Dihydroxycoumarin >98.0%(HPLC) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 22-36
• Safety Statements: 26

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 4,7-DIHYDROXYCOUMARIN

There total 12 articles about 4,7-DIHYDROXYCOUMARIN 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: 98.0%

4-hydroxy-7-(phenylmethoxy)-2H-1-benzopyran-2-one (30992-66-6) → 4,7-dihydroxycoumarin (1983-81-9)

Guidance literature:

4-hydroxy-7-(phenylmethoxy)-2H-1-benzopyran-2-one; In methanol; Inert atmosphere; Cooling with ice;

With 5%-palladium/activated carbon; hydrogen; In methanol;

DOI:10.1007/s00044-014-0942-z

Reference yield: 78.0%

malonic acid (141-82-2) + recorcinol (108-46-3) → 4,7-dihydroxycoumarin (1983-81-9)

Guidance literature:

With zinc(II) chloride; trichlorophosphate; at 60 - 65 ℃; for 12h;

Reference yield: 68.0%

4-amino-7-hydroxy-2H-chromen-2-one (244049-27-2) → 4,7-dihydroxycoumarin (1983-81-9)

Guidance literature:

With sulfuric acid; for 4h;

DOI:10.1021/jm9900624

upstream raw materials:

4-hydroxy-7-methoxycoumarine

2',4'-dihydroxy-4-acetophenone

carbon monoxide

4-amino-7-hydroxy-2H-chromen-2-one

Downstream raw materials:

(4,7-dihydroxy-2-oxo-2H-chromen-3-yl)-(4-hydroxy-2-oxo-2H-chromen-3-yl)-acetic acid ethyl ester

7-hydroxy-4-(4-methoxy-benzoyloxy)-coumarin

2-[4-(4,7-dihydroxy-2-oxo-2H-chromen-3-yl)-buta-1,3-dienyl]-3-methyl-4-phenyl-thiazolium betaine

2-[2-(4,7-dihydroxy-2-oxo-2H-chromen-3-yl)-vinyl]-3-methyl-4-phenyl-thiazolium betaine

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