34241-86-6

Basic information

• Product Name: 1,3-bis(1-phenylethenyl)benzene
• Synonyms: 1,3-Bis(1-phenylvinyl)benzene; benzene, 1,3-bis(1-phenylethenyl)-
• CAS NO: 34241-86-6
• Molecular Formula: C₂₂H₁₈
• Molecular Weight: 282.3783
• Mol File: 34241-86-6.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 425.6°C at 760 mmHg
• Flash Point: 207°C
• Density: 1.029g/cm³
• Vapor Pressure: 4.68E-07mmHg at 25°C
• Refractive Index: 1.602
• CAS DataBase Reference: 1,3-bis(1-phenylethenyl)benzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3-bis(1-phenylethenyl)benzene(34241-86-6)
• EPA Substance Registry System: 1,3-bis(1-phenylethenyl)benzene(34241-86-6)

Safety Data

• Hazardous Substances Data: 34241-86-6(Hazardous Substances Data)

Usage

General Description

1,3-bis(1-phenylethenyl)benzene, also known as p-terphenyl, is a chemical compound composed of three benzene rings connected by a central carbon-carbon double bond. It is a colorless crystalline solid that is insoluble in water but soluble in organic solvents. p-Terphenyl is used in the production of liquid crystal displays, as a heat transfer medium in closed loop heat transfer systems, and as a fluorescent dye in some industries. It is also used in the production of polymers and as a component in the formulation of some sunscreen products. Additionally, it has some potential applications in organic light-emitting diodes and as a potential intermediate in the synthesis of pharmaceuticals and industrial chemicals.

Upstream product

• 58-82-2 bradykinin 
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Downstream Products

• 71400-29-8 1,3-phenylene-bis(3-methyl-1-phenyl-pentylidene)dilithium 
• 73137-39-0 (1,3-phenylene)bis(3-methyl-1-phenyl pentylidene) 

Relevant articles and documents

Bromomethyl Silicate: A Robust Methylene Transfer Reagent for Radical-Polar Crossover Cyclopropanation of Alkenes

A general protocol for visible-light-induced cyclopropanation of alkenes was developed with bromomethyl silicate as a methylene transfer reagent, offering a robust tool for accessing highly valuable cyclopropanes. In addition to α-aryl or methyl-substituted Michael acceptors and styrene derivatives, the unactivated 1,1-dialkyl ethylenes were also shown to be viable substrates. Apart from realizing the cyclopropanation of terminal alkenes, the methyl transfer reaction has been further demonstrated to be amenable to the internal olefins. The photocatalytic cyclopropanation of 1,3-bis(1-arylethenyl)benzenes was also achieved, giving polycyclopropane derivatives in excellent yields. With late-stage cyclopropanation as the key strategy, the synthetic utility of this transformation was also demonstrated by the total synthesis of LG100268.

Synthesis and characterization of well-defined, regularly branched polystyrenes utilizing multifunctional initiators

A series of well-defined, long-branched polystyrenes (PS) of various architectures, but the same overall molecular weight, suited to the systematic study of branching effects, have been synthesized by anionic polymerization and characterized. Three end-branched, star-branched polystyrenes with 6, 9, and 13 end branches were synthesized with a trifunctional organolithium initiator; the synthesis of the 13-end molecule required a recently developed methoxysilyl functionalization and precipitation procedure to remove excess linking agent. In these architectures the number of branch points was fixed at four, while the number of chain ends varied. A 6-end, pom-pom (dumbbell-shaped) PS with two branch points was synthesized with a difunctional organolithium initiator. A regular 6-arm star polystyrene having one branch point was included to provide a comparison among three polymers, each having 6 ends, but having the number of branch points equal to 1, 2, or 4, The intrinsic viscosities and infinite dilution diffusion coefficients (and therefore the branching factors and hydrodynamic radii) decrease with increasing number of chain ends but do not vary monotonically with number of branch points. The values of Tg for the molecules reflect both the effects of tethering by junction points and increases in free volume due to the multiplication of chain ends as well as the presence of butadiene units used to facilitate linking.