5-methylidene-6,7,8,9-tetrahydro-5H-benzo[7]annulene

Base Information

• Chemical Name: 5-methylidene-6,7,8,9-tetrahydro-5H-benzo[7]annulene
• CAS No.: 40562-09-2
• Molecular Formula: C12H14
• Molecular Weight: 158.243
• Mol file: 40562-09-2.mol

Synonyms:1-Methylenbenzocycloheptan;6,7,8,9-tetrahydro-5-methylene-5H-benzocycloheptene;1-methylenebenzocycloheptane;3-methylenebenzocycloheptene;1-Methylenbenzosuberan;5H-Benzocycloheptene,6,7,8,9-tetrahydro-5-methylene;3-Methylen-1.2-benzo-cyclohepten-(1);

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

Chemical Property:

• Vapor Pressure: 0.0272mmHg at 25°C
• Boiling Point: 254.7°Cat760mmHg
• Flash Point: 103°C
• PSA: 0.00000
• Density: 0.96g/cm³
• LogP: 3.42620
• Storage Temp.: 2-8°C

Purity/Quality:

99% ^*data from raw suppliers

5-Methylene-6,7,8,9-tetrahydro-5H-benzo[7]annulene ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

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

There total 6 articles about 5-methylidene-6,7,8,9-tetrahydro-5H-benzo[7]annulene 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: 94.0%

Methyltriphenylphosphonium bromide (1779-49-3) + 1-Benzosuberone (826-73-3) → 6,7,8,9-tetrahydro-5-methylene-5H-benzocycloheptene (40562-09-2)

Guidance literature:

Methyltriphenylphosphonium bromide; With potassium tert-butylate; In tetrahydrofuran; for 0.166667h; Inert atmosphere;

1-Benzosuberone; In tetrahydrofuran; at 20 ℃; for 4h; Inert atmosphere;

DOI:10.1002/anie.202000943

Reference yield: 91.0%

methyl-triphenylphosphonium iodide (2065-66-9) + 1-Benzosuberone (826-73-3) → 6,7,8,9-tetrahydro-5-methylene-5H-benzocycloheptene (40562-09-2)

Guidance literature:

methyl-triphenylphosphonium iodide; With potassium tert-butylate; In diethyl ether;

1-Benzosuberone; In diethyl ether; at 20 ℃; for 4h;

DOI:10.3390/10010217

Reference yield:

(5-hydroxy-6,7,8,9-tetrahydro-5H-benzocyclohepten-5-yl)-acetic acid (4443-74-7) → 6,7,8,9-tetrahydro-5-methylene-5H-benzocycloheptene (40562-09-2)

Guidance literature:

copper; In quinoline; at 200 ℃;

upstream raw materials:

(5-hydroxy-6,7,8,9-tetrahydro-5H-benzocyclohepten-5-yl)-acetic acid

1-Benzosuberone

Methylenetriphenylphosphorane

Methyltriphenylphosphonium bromide

Downstream raw materials:

1-Benzosuberone

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