25108-63-8

Basic information

• Product Name: 1-methylidene-1,2,3,4-tetrahydronaphthalene
• Synonyms: 1-Methylene-1,2,3,4-tetrahydronaphthalene; naphthalene, 1,2,3,4-tetrahydro-1-methylene-
• CAS NO: 25108-63-8
• Molecular Formula: C₁₁H₁₂
• Molecular Weight: 144.213
• Mol File: 25108-63-8.mol

Chemical Properties

• Boiling Point: 234.3°C at 760 mmHg
• Flash Point: 89.6°C
• Density: 0.97g/cm³
• Vapor Pressure: 0.0816mmHg at 25°C
• Refractive Index: 1.552
• CAS DataBase Reference: 1-methylidene-1,2,3,4-tetrahydronaphthalene(CAS DataBase Reference)
• NIST Chemistry Reference: 1-methylidene-1,2,3,4-tetrahydronaphthalene(25108-63-8)
• EPA Substance Registry System: 1-methylidene-1,2,3,4-tetrahydronaphthalene(25108-63-8)

Safety Data

• Hazardous Substances Data: 25108-63-8(Hazardous Substances Data)

Usage

Structure

Cyclic compound with a fused 4-5 ring structure and a ketone functional group

Usage

Intermediate in the synthesis of pharmaceuticals and fragrances, production of insecticides and herbicides

Odor

Sweet, floral

Potential applications

Organic electronics due to semiconducting properties

Safety precautions

Flammable, may cause irritation to skin and eyes

Upstream product

• 4373-13-1 4-methyl-1,2-dihydronaphthalene 

Downstream Products

• 529-34-0 3,4-dihydronaphthalene-1(2H)-one 
• 62-53-3 aniline 
• 20972-43-4 trans-azoxybenzene 
• 906448-17-7 3,3-difluoro-1-phenyl-2-(1,2,3,4-tetrahydro-naphthalen-1-ylmethyl)-propenone 
• 951678-61-8 (E)-1-((phenylsulfonyl)methylene)-1,2,3,4-tetrahydronaphthalene 
• 64994-12-3 C₁₆H₁₅N 
• 1234173-00-2 5-butyl-4-[2-(2-methylprop-1-enyl)phenyl]-3',4'-dihydro-2'H,3H-spiro[furan-2,1'-naphthalene] 
• 1254470-71-7 N-((3,4-dihydronaphthalen-1(2H)-ylidene)methyl)-4-methylbenzenesulfonamide 
• 1254470-70-6 N-((3,4-dihydronaphthalen-1-yl)methyl)-4-methylbenzenesulfonamide 
• 19353-89-0 1-(4-methoxyphenyl)-1,2,3,4-tetrahydronaphthalene 
• 98577-49-2 1-phenylmethyl-1,2,3,4-tetrahydronaphthalen-1-ol 
• 1308661-38-2 (1-hydroxy-1,2,3,4-tetrahydronaphth-1-yl)methyl 4-methylphenyl sulfone 
• 65166-97-4 (-)-esermethole 
• 1415643-37-6 4-(tosylmethyl)-1,2-dihydronaphthalene 

Relevant articles and documents

A new catalytic transformation of diazo esters: hydride abstraction in dirhodium(II)-catalysed reactions

Secondary benzylic and allylic diazoacetates undergo dirhodium(II)-catalysed diazo decomposition to form, competitively or exclusively, ketone and vinylidene products from intramolecular hydride abstraction in catalyst ligand-dependent molar ratios.

The photochemical rearrangement of 1,2-dihydronaphthalenes into 1,4-dihydronaphthalenes induced by amines

The synthetic usefulness of the deprotonation/protonation reaction of excited 1,2-dihydronaphthalenes into 1,4-dihydronaphthalenes induced by amines has been investigated using 13 different substituted 1,2-dihydronaphthalenes and related compounds.The yield of the rearrangement ranges from 5 to 96percent.The formation of side-products depends on the position of protons in the substrate, which can be abstracted by the amine, and on competitive photoreactions.