6144-04-3

Basic information

• Product Name: α-Methylstyrene dimer
• Synonyms: Benzene, (1-methylethenyl)-, dimer
• CAS NO: 6144-04-3
• Molecular Formula: C18H20
• Molecular Weight: 236.3514
• Mol File: 6144-04-3.mol
• Article Data: 439

Chemical Properties

• Boiling Point: 162.5°Cat760mmHg
• Flash Point: 45.6°C
• Appearance: /
• Density: g/cm³
• Vapor Pressure: 2.83mmHg at 25°C
• CAS DataBase Reference: α-Methylstyrene dimer(CAS DataBase Reference)
• NIST Chemistry Reference: α-Methylstyrene dimer(6144-04-3)
• EPA Substance Registry System: α-Methylstyrene dimer(6144-04-3)

Safety Data

• Hazardous Substances Data: 6144-04-3(Hazardous Substances Data)

Usage

General Description

α-Methylstyrene dimer, also known as 1,3-Diphenyl-1-Butene, is a chemical compound that is formed by the dimerization of α-methylstyrene. It is a colorless to pale yellow liquid with a pungent, fruity odor. α-Methylstyrene dimer is used as a monomer for the production of thermoplastic polymers, such as polystyrene and other copolymers. It is also used as a chemical intermediate in the synthesis of various organic compounds. α-Methylstyrene dimer is considered to be a potential environmental pollutant and may cause irritation to the skin, eyes, and respiratory system. Therefore, proper handling and storage of this chemical are necessary.

InChI:InChI=1/2C9H10/c2*1-8(2)9-6-4-3-5-7-9/h2*3-7H,1H2,2H3

Upstream product

• 110-86-1 pyridine 
• 934-53-2 cumenyl chloride 
• 60-29-7 diethyl ether 
• 64-17-5 ethanol 
• 996-82-7 sodium diethylmalonate 
• 22768-22-5 4-methyl-2,4-diphenylpent-2-ene 
• 860701-93-5 dimethyl-(1-methyl-1-phenyl-ethyl)-amine oxide 
• 87894-68-6 3-phenylpent-2-enedioic acid 
• 80-15-9 Cumene hydroperoxide 
• 67-63-0 isopropyl alcohol 
• 71-43-2 benzene 
• 98-82-8 Isopropylbenzene 
• 130-15-4 [1,4]naphthoquinone 
• 3674-77-9 2-methyl-2-phenyl-1,3-dioxolane 

Downstream Products

• 102182-26-3 bis-(2-phenyl-propylmercapto)-[1,3,4]thiadiazole 
• 27421-06-3 3-methyl-4-(1-methyl-1-phenyl-ethyl)-phenol 
• 100389-71-7 N-(1-methyl-1-phenyl-ethyl)-acrylamide 
• 102312-78-7 (E)-methyl 5-phenylhex-5-enoate 
• 86147-38-8 methyl 2-methyl-5-phenylhex-5-enoate 
• 971-11-9 1-methyl-2-[2]naphthylsulfanyl-1-phenyl-ethyl hydroperoxide 
• 114492-68-1 phenyl-acetic acid-(1-benzylidene-3-phenyl-but-2-enyl ester) 
• 64888-14-8 4,6-bis-(1-methyl-1-phenyl-ethyl)-pyrogallol 
• 2085-88-3 2-methyl-2-phenyloxirane 
• 58215-92-2 3-ethyl-6-methyl-6-phenyl-[1,3]oxazinane 
• 3174-78-5 2-(4-phenyl-[1,3]dioxan-4-yl)-ethanol 
• 92864-94-3 1,3-diacetoxy-3-phenyl-butane 
• 104294-60-2 4-amino-2-phenylbutan-2-ol 
• 107920-37-6 cyanocarbonyloxy-(2-phenyl-allyl)-malononitrile 

Relevant articles and documents

Noble-metal-free deoxygenation of epoxides: Titanium dioxide as a photocatalytically regenerable electron-transfer catalyst

Catalytic deoxygenation of epoxides into the corresponding alkenes is a very important reaction in organic synthesis. Early reported systems, however, require noble metals, high reaction temperatures (>373 K), or toxic reducing agents. Here, we report a noble-metal-free heterogeneous catalytic system driven with alcohol as a reducing agent at room temperature. Photoirradiation (λ 2) with alcohol promotes efficient and selective deoxygenation of epoxides into alkenes. This noble-metal-free catalytic deoxygenation is facilitated by the combination of electron transfer from surface Ti3+ atoms on TiO2 to epoxides, which promotes deoxygenation of epoxides, and photocatalytic action of TiO2, which regenerates oxidized surface Ti atoms with alcohol as a reducing agent.

Radical induced disproportionation of alcohols assisted by iodide under acidic conditions

The disproportionation of alcohols without an additional reductant and oxidant to simultaneously form alkanes and aldehydes/ketones represents an atom-economical transformation. However, only limited methodologies have been reported, and they suffer from a narrow substrate scope or harsh reaction conditions. Herein, we report that alcohol disproportionation can proceed with high efficiency catalyzed by iodide under acidic conditions. This method exhibits high functional group tolerance including aryl alcohol derivatives with both electron-withdrawing and electron-donating groups, furan ring alcohol derivatives, allyl alcohol derivatives, and dihydric alcohols. Under the optimized reaction conditions, a 49% yield of 5-methyl furfural and a 49% yield of 2,5-diformylfuran were obtained simultaneously from 5-hydroxymethylfurfural. An initial mechanistic study suggested that the hydrogen transfer during this redox disproportionation occurred through the inter-transformation of HI and I2. Radical intermediates were involved during this reaction.

Photoinduced Hydroarylation and Cyclization of Alkenes with Luminescent Platinum(II) Complexes

Photoinduced hydroarylation of alkenes is an appealing synthetic strategy for arene functionalization. Herein, we demonstrated that aryl radicals generated from electron-deficient aryl chlorides/bromides could be trapped by an array of terminal/internal aryl alkenes in the presence of [Pt(O^N^C^N)] under visible-light (410 nm) irradiation, affording anti-Markovnikov hydroarylated compounds in up to 95 % yield. Besides, a protocol for [Pt(O^N^C^N)]-catalyzed intramolecular photocyclization of acrylanilides to give structurally diverse 3,4-dihydroquinolinones has been developed.