1-methylidene-1,2,3,4-tetrahydronaphthalene

Base Information

• Chemical Name: 1-methylidene-1,2,3,4-tetrahydronaphthalene
• CAS No.: 25108-63-8
• Molecular Formula: C11H12
• Molecular Weight: 144.216
• Mol file: 25108-63-8.mol

Synonyms:1,2,3,4-Tetrahydro-1-methylenenaphthalene;1-Methylene-1,2,3,4-tetrahydronaphthalene; a-Methylenetetralin

Chemical Property of 1-methylidene-1,2,3,4-tetrahydronaphthalene

Chemical Property:

• Vapor Pressure: 0.0816mmHg at 25°C
• Boiling Point: 234.3°C at 760 mmHg
• Flash Point: 89.6°C
• PSA: 0.00000
• Density: 0.97g/cm³
• LogP: 3.03610

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 1-methylidene-1,2,3,4-tetrahydronaphthalene

There total 2 articles about 1-methylidene-1,2,3,4-tetrahydronaphthalene 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: 12.0%

4-methyl-1,2-dihydronaphthalene (4373-13-1) → 1-methylene-1,2,3,4-tetrahydronaphthalene (25108-63-8) + 1-methyl-1,4-dihydronaphthalene (21564-70-5) + 1-Methylnaphthalene (90-12-0,34475-76-8)

Guidance literature:

With propylamine; Irradiation;

Reference yield:

Diazo-acetic acid 1,2,3,4-tetrahydro-naphthalen-1-yl ester → 1-methylene-1,2,3,4-tetrahydronaphthalene (25108-63-8) + 3,4-dihydronaphthalene-1(2H)-one (529-34-0)

Guidance literature:

With Rh₂[5S-MEPY]4; In dichloromethane; Yields of byproduct given; Heating; further Rh(II) catalyst;

Reference yield: 95.0%

1-methylene-1,2,3,4-tetrahydronaphthalene (25108-63-8) → 3,4-dihydronaphthalene-1(2H)-one (529-34-0)

Guidance literature:

1-methylene-1,2,3,4-tetrahydronaphthalene; With ozone; In dichloromethane; at -78 ℃;

With Merrifield resin-bound piperidine; In dichloromethane; at 20 ℃; for 10h;

DOI:10.1016/S0040-4020(02)01558-2

upstream raw materials:

4-methyl-1,2-dihydronaphthalene

Downstream raw materials:

3,4-dihydronaphthalene-1(2H)-one

aniline

trans-azoxybenzene

3,3-difluoro-1-phenyl-2-(1,2,3,4-tetrahydro-naphthalen-1-ylmethyl)-propenone