7,9-dimethoxy-1,2-dihydrocyclopenta[c]chromene-3,4-dione

Base Information

Chemical Name:7,9-dimethoxy-1,2-dihydrocyclopenta[c]chromene-3,4-dione
CAS No.:1150-42-1
Molecular Formula:C₁₄H₁₂O₅
Molecular Weight:260.246
Hs Code.:
Mol file:1150-42-1.mol

Synonyms:1-Cyclopentene-1-carboxylicacid, 2-(2-hydroxy-4,6-dimethoxyphenyl)-5-oxo-, d-lactone (7CI); 1,2-Dihydro-7,9-dimethoxycyclopenta[c][1]benzopyran-3,4-dione;5,7-Dimethoxycyclopentenone[2,3-c]coumarin

Suppliers and Price of 7,9-dimethoxy-1,2-dihydrocyclopenta[c]chromene-3,4-dione

Supply Marketing:

Business phase:: The product has achieved commercial mass production^*data from LookChem market partment

Manufacturers and distributors:

Manufacture/Brand
Chemicals and raw materials
Packaging
price

Total 0 raw suppliers

Chemical Property of 7,9-dimethoxy-1,2-dihydrocyclopenta[c]chromene-3,4-dione

Chemical Property:

Vapor Pressure:9.74E-10mmHg at 25°C
Boiling Point:489.7°C at 760 mmHg
Flash Point:302.6°C
PSA：65.74000
Density:1.38g/cm³
LogP:1.93910

Purity/Quality:

Safty Information:

Pictogram(s):
Hazard Codes:

MSDS Files:: SDS file from LookChem

Useful:

Technology Process of 7,9-dimethoxy-1,2-dihydrocyclopenta[c]chromene-3,4-dione

There total 5 articles about 7,9-dimethoxy-1,2-dihydrocyclopenta[c]chromene-3,4-dione 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: 79.0%

: 1089-97-0
3-(5,7-dimethoxy-2-oxo-2H-chromen-4-yl)-propionic acid

: 1150-42-1
5,7-dimethoxycyclopentenon[2,3-c]coumarin

Guidance literature:: With lithium perchlorate; scandium tris(trifluoromethanesulfonate); In nitromethane; at 60 ℃; for 1h;
DOI:10.1021/ja020988s

Reference yield:

: 500-99-2
3,5-dimethoxyphenol

: 1150-42-1
5,7-dimethoxycyclopentenon[2,3-c]coumarin

Guidance literature:: Multi-step reaction with 5 steps

1.1: acetic acid; sulfuric acid / neat (no solvent) / 13.25 h / 8 - 60 °C / Inert atmosphere

1.2: 255 / 0.5 h / 40 - 45 °C

2.1: 18-crown-6 ether; potassium iodide; potassium tert-butylate / acetonitrile / 24 h / 20 - 40 °C / Inert atmosphere

3.1: sodium hydroxide / ethanol / 3 h / 60 - 65 °C

3.2: 1 h / 8 - 10 °C / pH 2

4.1: m-xylene / 12 h / 135 - 140 °C

5.1: polyphosphoric acid / neat (no solvent) / 12 h / 70 - 75 °C / Inert atmosphere

5.2: 255 / 1 h / 20 °C

With 18-crown-6 ether; sulfuric acid; potassium tert-butylate; acetic acid; potassium iodide; sodium hydroxide; In ethanol; m-xylene; acetonitrile;

Reference yield:

: 1588866-83-4
4-(chloromethyl)-5,7-dimethoxy-2H-chromen-2-one

: 1150-42-1
5,7-dimethoxycyclopentenon[2,3-c]coumarin

Guidance literature:: Multi-step reaction with 4 steps

1.1: 18-crown-6 ether; potassium iodide; potassium tert-butylate / acetonitrile / 24 h / 20 - 40 °C / Inert atmosphere

2.1: sodium hydroxide / ethanol / 3 h / 60 - 65 °C

2.2: 1 h / 8 - 10 °C / pH 2

3.1: m-xylene / 12 h / 135 - 140 °C

4.1: polyphosphoric acid / neat (no solvent) / 12 h / 70 - 75 °C / Inert atmosphere

4.2: 255 / 1 h / 20 °C

With 18-crown-6 ether; potassium tert-butylate; potassium iodide; sodium hydroxide; In ethanol; m-xylene; acetonitrile;