Toluene-4-sulfonic acid 3,6-dihydroxy-7-methoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester

Base Information

• Chemical Name: Toluene-4-sulfonic acid 3,6-dihydroxy-7-methoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester
• CAS No.: 154048-11-0
• Molecular Formula: C₂₄H₂₀O₉S
• Molecular Weight: 484.483
• Mol file: 154048-11-0.mol

Synonyms:Toluene-4-sulfonic acid 3,6-dihydroxy-7-methoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester

Chemical Property of Toluene-4-sulfonic acid 3,6-dihydroxy-7-methoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of Toluene-4-sulfonic acid 3,6-dihydroxy-7-methoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester

There total 4 articles about Toluene-4-sulfonic acid 3,6-dihydroxy-7-methoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl 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: 91.0%

Acetic acid 3-hydroxy-7-methoxy-2-(4-methoxy-phenyl)-4-oxo-5-(toluene-4-sulfonyloxy)-4H-chromen-6-yl ester (154048-03-0) → Toluene-4-sulfonic acid 3,6-dihydroxy-7-methoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester (154048-11-0)

Guidance literature:

With hydrogenchloride; In methanol; for 10h; Heating;

DOI:10.1246/bcsj.66.2668

Reference yield:

5,6-dihydroxy-3,4',7-trimethoxyflavone diacetate (154047-82-2) → Toluene-4-sulfonic acid 3,6-dihydroxy-7-methoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester (154048-11-0)

Guidance literature:

Multi-step reaction with 4 steps

1: 100 percent / AlBr₃ / acetonitrile

2: 87 percent / potassium carbonate / acetone / Heating

3: 92 percent / aluminum bromide / acetonitrile / 1 h / 0 °C

4: 91 percent / concd. hydrochloric acid / methanol / 10 h / Heating

With hydrogenchloride; aluminum tri-bromide; potassium carbonate; In methanol; acetone; acetonitrile;

DOI:10.1246/bcsj.66.2668

Reference yield:

6-acetoxy-5-hydroxy-3,4',7-trimethoxyflavone (154047-87-7) → Toluene-4-sulfonic acid 3,6-dihydroxy-7-methoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester (154048-11-0)

Guidance literature:

Multi-step reaction with 3 steps

1: 87 percent / potassium carbonate / acetone / Heating

2: 92 percent / aluminum bromide / acetonitrile / 1 h / 0 °C

3: 91 percent / concd. hydrochloric acid / methanol / 10 h / Heating

With hydrogenchloride; aluminum tri-bromide; potassium carbonate; In methanol; acetone; acetonitrile;

DOI:10.1246/bcsj.66.2668

upstream raw materials:

Acetic acid 3-hydroxy-7-methoxy-2-(4-methoxy-phenyl)-4-oxo-5-(toluene-4-sulfonyloxy)-4H-chromen-6-yl ester

5,6-dihydroxy-3,4',7-trimethoxyflavone diacetate

6-acetoxy-5-hydroxy-3,4',7-trimethoxyflavone

Acetic acid 3,7-dimethoxy-2-(4-methoxy-phenyl)-4-oxo-5-(toluene-4-sulfonyloxy)-4H-chromen-6-yl ester

Downstream raw materials:

3,5-Dihydroxy-7-methoxy-6-methoxymethoxy-2-(4-methoxy-phenyl)-chromen-4-one

6-hydroxykaempferol 7,4'-dimethyl ether