dimethyl 5,9-dioxo-6,7,8,9-tetrahydro-5H-benzo[7]annulene-6,8-dicarboxylate

Base Information

• Chemical Name: dimethyl 5,9-dioxo-6,7,8,9-tetrahydro-5H-benzo[7]annulene-6,8-dicarboxylate
• CAS No.: 6496-77-1
• Molecular Formula: C15H14 O6
• Molecular Weight: 290.2681

Synonyms:5H-Benzocycloheptene-6,8-dicarboxylicacid, 5,9-dioxo-, dimethyl ester (9CI); 5H-Benzocycloheptene-6,8-dicarboxylicacid, 6,7,8,9-tetrahydro-5,9-dioxo-, dimethyl ester (7CI,8CI); NSC 380246

Chemical Property of dimethyl 5,9-dioxo-6,7,8,9-tetrahydro-5H-benzo[7]annulene-6,8-dicarboxylate

Chemical Property:

• Vapor Pressure: 5E-08mmHg at 25°C
• Boiling Point: 442.5°Cat760mmHg
• Flash Point: 197.4°C
• Density: 1.306g/cm³

Purity/Quality:

99% ^*data from raw suppliers

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MSDS Files:

SDS file from LookChem

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Technology Process of dimethyl 5,9-dioxo-6,7,8,9-tetrahydro-5H-benzo[7]annulene-6,8-dicarboxylate

There total 2 articles about dimethyl 5,9-dioxo-6,7,8,9-tetrahydro-5H-benzo[7]annulene-6,8-dicarboxylate 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: 88.0%

Dimethyl glutarate (1119-40-0) + phthalic acid dimethyl ester (131-11-3,64441-70-9) → 5H-benzocycloheptene-6,8-dicarboxylic acid-6,7,8,9-tetrahydro-5,9-dioxo-6,8-dimethyl ester (6496-77-1)

Guidance literature:

With sodium hydride; In 1,4-dioxane; methanol; at 80 ℃; for 24h;

DOI:10.1080/00397919708004806

Reference yield:

→ 5H-benzocycloheptene-6,8-dicarboxylic acid-6,7,8,9-tetrahydro-5,9-dioxo-6,8-dimethyl ester (6496-77-1)

Guidance literature:

Phthalsaeure-dimethylester, 1. Glutarsaeuredimethylester, Erhitzen auf 120grad, 2. Methanol, Natrium, Erhitzen auf 125-130grad;

Reference yield: 30.0%

formaldehyd (50-00-0,30525-89-4,61233-19-0) + 5H-benzocycloheptene-6,8-dicarboxylic acid-6,7,8,9-tetrahydro-5,9-dioxo-6,8-dimethyl ester (6496-77-1) + benzylamine (100-46-9) → 8-Benzyl-1c,6c-dimethoxycarbonyl-3,4-benzo-8-azabicyclo<4.3.1>dec-3-en-2,5-dion (6506-21-4) + 12-Methyl-2,9-dioxo-12-aza-tricyclo[8.3.1.03,8]tetradeca-3(8),4,6-triene-1,10-dicarboxylic acid dimethyl ester (6496-78-2)

Guidance literature:

With hydrogenchloride; at 90 ℃; for 40h;

DOI:10.1080/00397919708004806

upstream raw materials:

Dimethyl glutarate

phthalic acid dimethyl ester

Downstream raw materials:

8-Benzyl-1c,6c-dimethoxycarbonyl-3,4-benzo-8-azabicyclo<4.3.1>dec-3-en-2,5-dion

12-Methyl-2,9-dioxo-12-aza-tricyclo[8.3.1.0^3,8]tetradeca-3⁽⁸⁾,4,6-triene-1,10-dicarboxylic acid dimethyl ester

9-Phenyl-6,7-dihydro-benzocyclohepten-5-one

9-Benzyl-6,7-dihydro-benzocyclohepten-5-one

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