trans-2-<2-(2',5'-dimethoxy-phenyl)-ethenyl>-4-oxo-3-propoxy-4H-1-benzopyran-6-carboxylic acid, methyl ester

Base Information

Chemical Name:trans-2-<2-(2',5'-dimethoxy-phenyl)-ethenyl>-4-oxo-3-propoxy-4H-1-benzopyran-6-carboxylic acid, methyl ester
CAS No.:78581-51-8
Molecular Formula:C₂₄H₂₄O₇
Molecular Weight:424.45
Hs Code.:

Synonyms:trans-2-<2-(2',5'-dimethoxy-phenyl)-ethenyl>-4-oxo-3-propoxy-4H-1-benzopyran-6-carboxylic acid, methyl ester

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Chemical Property of trans-2-<2-(2',5'-dimethoxy-phenyl)-ethenyl>-4-oxo-3-propoxy-4H-1-benzopyran-6-carboxylic acid, methyl ester

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Technology Process of trans-2-<2-(2',5'-dimethoxy-phenyl)-ethenyl>-4-oxo-3-propoxy-4H-1-benzopyran-6-carboxylic acid, methyl ester

There total 6 articles about trans-2-<2-(2',5'-dimethoxy-phenyl)-ethenyl>-4-oxo-3-propoxy-4H-1-benzopyran-6-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: 62.0%

: 93-02-7
2,5-dimethoxybenzaldehyde

: 78581-56-3
2-metyl-4-oxo-3-propoxy-4H-1-benzopyran-6-carboxylic acid, methyl ester

: 78581-51-8
trans-2-<2-(2',5'-dimethoxy-phenyl)-ethenyl>-4-oxo-3-propoxy-4H-1-benzopyran-6-carboxylic acid, methyl ester

Guidance literature:: With sodium methylate; In methanol; for 20h; Ambient temperature;

Reference yield:

: 57009-12-8
methyl 3-acetyl-4-hydroxybenzoate

: 78581-51-8
trans-2-<2-(2',5'-dimethoxy-phenyl)-ethenyl>-4-oxo-3-propoxy-4H-1-benzopyran-6-carboxylic acid, methyl ester

Guidance literature:: Multi-step reaction with 7 steps

1: 95 percent / pyridine / 20 h / Ambient temperature

2: bromine, CaCO₃ / CH₂Cl₂ / 16 h / Ambient temperature

3: dimethylformamide / 20 h / Ambient temperature

4: acetic anhydride, triethylamine / 20 h / Heating

5: 81 percent / 2.5 percent KOH / methanol / 2 h / Heating

6: 72 percent / K₂CO₃ / dimethylformamide / 20 h / 50 °C

7: 62 percent / sodium methylate / methanol / 20 h / Ambient temperature

With potassium hydroxide; bromine; sodium methylate; acetic anhydride; potassium carbonate; triethylamine; calcium carbonate; In pyridine; methanol; dichloromethane; N,N-dimethyl-formamide;

Reference yield:

: 78581-52-9
4-acetoxy-3-acetyl-benzoic acid, methyl ester

: 78581-51-8
trans-2-<2-(2',5'-dimethoxy-phenyl)-ethenyl>-4-oxo-3-propoxy-4H-1-benzopyran-6-carboxylic acid, methyl ester

Guidance literature:: Multi-step reaction with 6 steps

1: bromine, CaCO₃ / CH₂Cl₂ / 16 h / Ambient temperature

2: dimethylformamide / 20 h / Ambient temperature

3: acetic anhydride, triethylamine / 20 h / Heating

4: 81 percent / 2.5 percent KOH / methanol / 2 h / Heating

5: 72 percent / K₂CO₃ / dimethylformamide / 20 h / 50 °C

6: 62 percent / sodium methylate / methanol / 20 h / Ambient temperature

With potassium hydroxide; bromine; sodium methylate; acetic anhydride; potassium carbonate; triethylamine; calcium carbonate; In methanol; dichloromethane; N,N-dimethyl-formamide;