3-carbethoxypyranocoumarin

Base Information

• Chemical Name: 3-carbethoxypyranocoumarin
• CAS No.: 86116-44-1
• Molecular Formula: C₁₅H₁₂O₅
• Molecular Weight: 272.257
• Hs Code.: 2932999099
• Mol file: 86116-44-1.mol

Synonyms:3-Chps;3-Carbethoxypyranocoumarin;ethyl 2-oxo-2H,8H-pyrano[3,2-g]chromene-3-carboxylate;3-Carbethoxyhomopsoralen;2H,8H-Benzo(1,2-b:5,4-b')dipyran-3-carboxylic acid,2-oxo-,ethyl ester;

Chemical Property of 3-carbethoxypyranocoumarin

Chemical Property:

• Vapor Pressure: 7E-09mmHg at 25°C
• Boiling Point: 466.6°C at 760 mmHg
• Flash Point: 210.4°C
• PSA: 65.74000
• Density: 1.358g/cm³
• LogP: 2.37530

Purity/Quality:

99%min ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 3-carbethoxypyranocoumarin

There total 6 articles about 3-carbethoxypyranocoumarin 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: 92.0%

formyl-6 hydroxy-7 2H chromene (86116-31-6) + diethyl malonate (105-53-3) → 2-Oxo-2H,8H-pyrano[3,2-g]chromene-3-carboxylic acid ethyl ester (86116-44-1)

Guidance literature:

With piperidine; In ethanol; for 20h; Heating;

Reference yield:

acide methoxy-7 2H chromene carboxylique-3 (57543-60-9) → 2-Oxo-2H,8H-pyrano[3,2-g]chromene-3-carboxylic acid ethyl ester (86116-44-1)

Guidance literature:

Multi-step reaction with 6 steps

1: 92.5 percent / K₂CO₃ / acetone / 4 h / Heating

2: 50.5 percent / TiCl₄ / CH₂Cl₂ / 1 h / Ambient temperature

3: 83 percent / 10percent aq. K₂CO₃ / Heating

4: 77 percent / Cu powder / quinoline / Heating

5: 59 percent / BCl₃ / CH₂Cl₂ / 1 h / 0 °C

6: 92 percent / piperidine / ethanol / 20 h / Heating

With piperidine; boron trichloride; titanium tetrachloride; copper; potassium carbonate; In quinoline; ethanol; dichloromethane; acetone;

Reference yield:

formyl-6 methoxy-7 2H chromene (86236-15-9) → 2-Oxo-2H,8H-pyrano[3,2-g]chromene-3-carboxylic acid ethyl ester (86116-44-1)

Guidance literature:

Multi-step reaction with 2 steps

1: 59 percent / BCl₃ / CH₂Cl₂ / 1 h / 0 °C

2: 92 percent / piperidine / ethanol / 20 h / Heating

With piperidine; boron trichloride; In ethanol; dichloromethane;

upstream raw materials:

formyl-6 hydroxy-7 2H chromene

diethyl malonate

acide methoxy-7 2H chromene carboxylique-3

formyl-6 methoxy-7 2H chromene

Downstream raw materials:

pyrano[3,2-g][1]benzopyran-2-one

Refernces