4-[(E)-2-(3,4-Dihydroxy-phenyl)-vinyl]-6-oxo-6H-pyran-2-carboxylic acid methyl ester

Base Information

• Chemical Name: 4-[(E)-2-(3,4-Dihydroxy-phenyl)-vinyl]-6-oxo-6H-pyran-2-carboxylic acid methyl ester
• CAS No.: 180031-64-5
• Molecular Formula: C₁₅H₁₂O₆
• Molecular Weight: 288.257
• Mol file: 180031-64-5.mol

Synonyms:4-[(E)-2-(3,4-Dihydroxy-phenyl)-vinyl]-6-oxo-6H-pyran-2-carboxylic acid methyl ester

Chemical Property of 4-[(E)-2-(3,4-Dihydroxy-phenyl)-vinyl]-6-oxo-6H-pyran-2-carboxylic acid methyl ester

Chemical Property:

Purity/Quality:

Safty Information:

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MSDS Files:

Useful:

Technology Process of 4-[(E)-2-(3,4-Dihydroxy-phenyl)-vinyl]-6-oxo-6H-pyran-2-carboxylic acid methyl ester

There total 4 articles about 4-[(E)-2-(3,4-Dihydroxy-phenyl)-vinyl]-6-oxo-6H-pyran-2-carboxylic acid methyl 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: 50.0%

4-[(E)-2-(3,4-Dimethoxy-phenyl)-vinyl]-6-oxo-6H-pyran-2-carboxylic acid methyl ester (180031-62-3) → 4-[(E)-2-(3,4-Dihydroxy-phenyl)-vinyl]-6-oxo-6H-pyran-2-carboxylic acid methyl ester (180031-64-5)

Guidance literature:

With boron tribromide; In dichloromethane; at -78 - 20 ℃;

DOI:10.1016/0031-9422(96)00242-7

Reference yield:

3,4-dimethoxy-benzaldehyde (120-14-9) → 4-[(E)-2-(3,4-Dihydroxy-phenyl)-vinyl]-6-oxo-6H-pyran-2-carboxylic acid methyl ester (180031-64-5)

Guidance literature:

Multi-step reaction with 2 steps

1: K₂CO₃, 18-crown-6 / CH₂Cl₂ / 48 h / Heating

2: 50 percent / BBr₃ / CH₂Cl₂ / -78 - 20 °C

With 18-crown-6 ether; boron tribromide; potassium carbonate; In dichloromethane;

DOI:10.1016/0031-9422(96)00242-7

Reference yield:

4-(Brommethyl)-2-oxo-2H-pyran-6-carbonsaeure-methylester (103366-83-2) → 4-[(E)-2-(3,4-Dihydroxy-phenyl)-vinyl]-6-oxo-6H-pyran-2-carboxylic acid methyl ester (180031-64-5)

Guidance literature:

Multi-step reaction with 3 steps

1: 94 percent / toluene / 24 h / 1000 °C

2: K₂CO₃, 18-crown-6 / CH₂Cl₂ / 48 h / Heating

3: 50 percent / BBr₃ / CH₂Cl₂ / -78 - 20 °C

With 18-crown-6 ether; boron tribromide; potassium carbonate; In dichloromethane; toluene;

DOI:10.1016/0031-9422(96)00242-7

upstream raw materials:

4-[(E)-2-(3,4-Dimethoxy-phenyl)-vinyl]-6-oxo-6H-pyran-2-carboxylic acid methyl ester

3,4-dimethoxy-benzaldehyde

4-(Brommethyl)-2-oxo-2H-pyran-6-carbonsaeure-methylester