121219-17-8

Basic information

• Product Name: 2,3-Difluoro-4'-pentyl-1,1'-biphenyl
• Synonyms: 2,3-Difluoro-4'-pentyl-1,1'-biphenyl;2,3-Difluoro-4'-pentylbiphenyl;2,3-difluoro-1-pentyl-4-phenylbenzene
• CAS NO: 121219-17-8
• Molecular Formula: C17H18F2
• Molecular Weight: 260.325
• Mol File: 121219-17-8.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 334.358 °C at 760 mmHg
• Flash Point: 130.838 °C
• Appearance: /
• Density: 1.060
• CAS DataBase Reference: 2,3-Difluoro-4'-pentyl-1,1'-biphenyl(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3-Difluoro-4'-pentyl-1,1'-biphenyl(121219-17-8)
• EPA Substance Registry System: 2,3-Difluoro-4'-pentyl-1,1'-biphenyl(121219-17-8)

Safety Data

• Hazardous Substances Data: 121219-17-8(Hazardous Substances Data)

Usage

General Description

2,3-Difluoro-4'-pentyl-1,1'-biphenyl is a chemical compound with the molecular formula C18H19F2. It is a member of the biphenyl family, which are compounds that consist of two phenyl rings connected by a single bond. The presence of fluorine atoms in the compound gives it unique properties and potential applications in various fields. 2,3-Difluoro-4'-pentyl-1,1'-biphenyl may be used as a precursor in the synthesis of pharmaceuticals, organic LED materials, or liquid crystals. Its specific properties and potential uses make it a valuable compound in the field of organic chemistry and materials science.

Upstream product

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Relevant articles and documents

The compound, composition, and display device

PROBLEM TO BE SOLVED: To provide a compound capable of elevating an upper limit temperature where a SmC (smectic-C) phase of a liquid crystal can exist, broadening a temperature width of the SmC phase or enlarging a tilt angle of the SmC phase, and to provide a liquid crystal composition comprising the compound and a display element including the liquid crystal composition.SOLUTION: [1] The compound is expressed by general formula (i) shown below. In general formula (i), R and R' each independently represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 9 carbon atoms; A1, A2 and A3 each independently represent a 1,4-phenylene group or a 2,3-difluoro-1,4-phenylene group; m represents an integer of 1 to 10; and Y represents a cyclohexylene group, a phenylene group, a bicyclooctylene group or a dialkylsilylene group.

Synthesis and mesomorphic properties of laterally fluorinated alkyl 4′′-alkylterphenyl-4-yl carbonate liquid crystals

Fifteen series of homologues of a variety of mono-, di- and trifluorosubstituted alkyl 4′′-alkylterphenyl-4-yl carbonates have been synthesized and their mesomorphic properties have been determined. From among 95 prepared compounds, 40 pure nematogens have been found, as well as 55 mesogens with orthogonal and tilted smectic phases in broad temperature ranges. The type and combination of the LC phase strongly depend on the position and number of the fluorine atoms. Physical properties and correlations between the molecular core fluorosubstitution, the length of the terminal chains and the type and sequence of the liquid crystalline phases, have been determined. The compounds are useful for the formulation of nematic mixtures as well as ferroelectric ones.

The Synthesis and Transition Temperatures of Some 4,4"-dialkyl- and 4,4"-Alkoxyalkyl-1,1':4',1"-terphenyls with 2,3- or 2',3'-difluoro Substituents and of their Biphenyl Analogues

The tetrakis(triphenylphosphine)palladium(o)-catalysed coupling of arylboronyc acids with aryl halides is used to prepare several 4,4"-dialkyl- and 4,4"-alkoxyalkyl-1,1':4',1"-terphenyls with 2,3- or 2',3'-difluoro substituents and their related biphenyl systems.Lithiation ortho to a 1,2-difluoroaromatic unit provides the route to the 2,3-difluoroarylboronic acids.The 2,3-difluoro substituted terphenyls are low-melting liquid crystals with wide-range Sc phases and no underlying smectic phase; these compounds are excellent hosts for ferroelectric systems.The compounds with widest Sc ranges are those with the difluoro substituents in an end ring and the compounds with difluoro substituents in the central ring show more nematic character and so are useful for ECB devices.