6H,11H-[2]Benzopyrano[4,3-c][1]benzopyran-6,11-dione

Base Information

• Chemical Name: 6H,11H-[2]Benzopyrano[4,3-c][1]benzopyran-6,11-dione
• CAS No.: 2288-98-4
• Molecular Formula: C₁₆H₈O₄
• Molecular Weight: 264.237
• Hs Code.: 2932999099
• Mol file: 2288-98-4.mol

Synonyms:a,2-Stilbenedicarboxylic acid, a',2'-dihydroxy-, di-d-lactone (7CI); Benzeneaceticacid, 2-carboxy-a-[hydroxy(2-hydroxyphenyl)methylene]-,di-d-lactone;Isocoumarino[3,4:4',3']coumarin

Chemical Property of 6H,11H-[2]Benzopyrano[4,3-c][1]benzopyran-6,11-dione

Chemical Property:

• Vapor Pressure: 1.07E-09mmHg at 25°C
• Boiling Point: 488.6°Cat760mmHg
• Flash Point: 260.5°C
• PSA: 60.42000
• Density: 1.49g/cm³
• LogP: 3.05260

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 6H,11H-[2]Benzopyrano[4,3-c][1]benzopyran-6,11-dione

There total 11 articles about 6H,11H-[2]Benzopyrano[4,3-c][1]benzopyran-6,11-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: 89.0%

2-hydroxycinnamic acid (495-79-4,583-17-5,614-60-8) + 2-bromobenzoic-acid (88-65-3) → <2>benzopyrano<4,3-c><1>benzopyran-5,12-dione (2288-98-4)

Guidance literature:

With sodium ethanolate; nickel tetracarbonyl; In N,N-dimethyl-formamide; at 150 ℃; for 10h;

Reference yield: 75.0%

N-methoxybenzamide (2446-51-7) + 3-(phenyl-λ3-iodanylidene)chromane-2,4-dione (86795-49-5) → <2>benzopyrano<4,3-c><1>benzopyran-5,12-dione (2288-98-4)

Guidance literature:

With silver hexafluoroantimonate; dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; cesium acetate; In acetone; at 85 ℃; for 12h;

DOI:10.1039/d0cc06038k

Reference yield: 63.0%

4-hydroxy[1]benzopyran-2-one (1076-38-6,92395-12-5) + benzoic acid (65-85-0,8013-63-6) → <2>benzopyrano<4,3-c><1>benzopyran-5,12-dione (2288-98-4)

Guidance literature:

With potassium acetate; copper diacetate; palladium diacetate; In 1,4-dioxane; at 120 ℃; for 24h; Reagent/catalyst; Solvent; Catalytic behavior; Inert atmosphere; Sealed tube;

DOI:10.1021/acs.orglett.9b03932

upstream raw materials:

bis(phenyl) carbonate

4-hydroxy-3-phenylcoumarin

1,2,3,4-tetrahydro<2>benzopyrano<4,3-c><1>benzopyran-5,12-dione

4-hydroxy[1]benzopyran-2-one

Downstream raw materials:

2-hydroxy-2'-carboxydeoxybenzoin

3-(2-hydroxyphenyl)-1H-isochromen-1-one

3-(o-acetoxyphenyl)isocoumarin