71458-14-5

Basic information

• Product Name: trans-1-(Bromoethyl)-4-pentylcyclohexane
• Synonyms: trans-1-(Bromoethyl)-4-pentylcyclohexane;1-(Bromomethyl)-4-pentyl-trans- Cyclohexane
• CAS NO: 71458-14-5
• Molecular Formula: C₁₂H₂₃Br
• Molecular Weight: 247.218
• Mol File: 71458-14-5.mol

Chemical Properties

• Boiling Point: 271.0±8.0 °C(Predicted)
• Appearance: /
• Density: 1.085±0.06 g/cm3(Predicted)
• CAS DataBase Reference: trans-1-(Bromoethyl)-4-pentylcyclohexane(CAS DataBase Reference)
• NIST Chemistry Reference: trans-1-(Bromoethyl)-4-pentylcyclohexane(71458-14-5)
• EPA Substance Registry System: trans-1-(Bromoethyl)-4-pentylcyclohexane(71458-14-5)

Safety Data

• Hazardous Substances Data: 71458-14-5(Hazardous Substances Data)

Usage

Uses

Used in Organic Synthesis:
Trans-1-(Bromoethyl)-4-pentylcyclohexane is utilized as a reagent in organic synthesis for the preparation of various organic compounds. Its unique structure allows for versatile reactions and the formation of a wide range of products.
Used in Pharmaceutical Manufacturing:
In the pharmaceutical industry, trans-1-(Bromoethyl)-4-pentylcyclohexane is employed as a key intermediate in the synthesis of specific drugs. Its presence in the molecular structure can contribute to the desired pharmacological properties of the final product.
Used in Agrochemical Production:
Trans-1-(Bromoethyl)-4-pentylcyclohexane also finds application in the agrochemical sector, where it serves as a precursor in the manufacturing of various agrochemicals. Its role in these products is crucial for their effectiveness in agricultural applications.
Used in Materials Science:
With potential applications in materials science, trans-1-(Bromoethyl)-4-pentylcyclohexane may contribute to the development of new materials with unique properties. Its integration into material compositions could lead to advancements in various fields.
Used as a Precursor in Specialty Chemicals Production:
Furthermore, trans-1-(Bromoethyl)-4-pentylcyclohexane is used as a precursor in the production of specialty chemicals. Its versatility in chemical reactions makes it a valuable component in creating specialized compounds for niche applications.

Upstream product

• 170573-30-5 trans-(4-pentylcyclohexane)-methanol 
• 38289-29-1 4-trans-pentylcyclohexane-1-carboxylic acid 
• 71458-08-7 trans-4-pentylcyclohexanecarboxamide 
• 67589-90-6 trans-4-pentylcyclohexane-1-carboxylic acid chloride 
• 74225-18-6 ethyl trans-4-pentylcyclohexane-carboxylate 

Downstream Products

• 95149-48-7 trans-4-pentylcyclohexylacetonitrile 
• 94110-80-2 1-Methyl-4-((S)-4-pentyl-cyclohexylmethanesulfinyl)-benzene 
• 98614-28-9 2-Bromo-1-(4-pentyl-cyclohexylmethoxy)-4-(4-propyl-cyclohexyl)-benzene 
• 115607-27-7 4-<(trans-4-pentylcyclohexyl)methoxy>phenol 
• 84361-28-4 (trans-4-pentylcyclohexyl)acetyl chloride 
• 84219-03-4 (trans-4-pentylcyclohexyl)acetic acid 
• 87002-28-6 [2-(4-Pentyl-cyclohexyl)-ethyl]-benzene 
• 89013-06-9 4-[2-(4-Pentyl-cyclohexyl)-ethyl]-benzamide 
• 89013-10-5 4-[2-(4-Pentyl-cyclohexyl)-ethyl]-benzoyl chloride 
• 125533-09-7 2-(4-Pentyl-cyclohexyl)-1-phenyl-ethanone 

Relevant articles and documents

Fluorinated liquid crystals

The disclosure relates to fluorinated chiral liquid crystals that incorporate a cyclohexyl grouping in their structure. They can be used as dopants and lead to mixtures of ferroelectric liquid crystals that have an application in display systems. They meet the following chemical formula. STR1 with 1≤n≤14 if X=CH2 Y=--CH2 -- with R=CmH2m+1 and 5≤m≤16 STR2

The Synthesis and Liquid-Crystal Transition Temperatures of Some Fluoro-Substituted Benzonitriles

Various laterally fluoro-substituted benzonitriles have been prepared containing a trans-4-(n-alkyl)cyclohexane ring linked to the 4-position of the benzonitriles either through a methyleneoxy (-CH2O-) or an ethylene (-CH2CH2-) bridge.The bridging group links the benzonitrile and cyclohexane rings either directly or through an additional 1,4-bonded cyclohexane or benzene ring.The synthesis and liquid-crystal transition temperatures of these new compounds are described.In several cases the nematic-isotropic transition temperatures of F-substituted benzonitriles are found to be higher than those of the non-laterally substituted analogues.

The Properties of Liquid Crystal Materials Incorporating the -CH2O- Inter-ring Linkage

To establish more securely the influence of the -CH2O- inter-ring linkage upon the properties of mesogens of both high and low dielectric anisotropy, a range of ethers with the following general structure has been prepared and their properties examined. The thermal and electro-optic properties of the compounds are discussed, and comparisons made where possible with analogous materials incorporating the -CH2CH2- linkage.

Liquid crystalline esters and mixtures

Compounds of the formula STR1 wherein X2 is a single covalent bond or --COO--; X1 is a single covalent bond, --COO--, --CH2 CH2 -- or when X2 is --COO--, X1 also can be p--C6 H4 --, p--C6 H4 --CH2 CH2 --, --CH2 CH2 --p--C6 H4, p--C6 H4 --COO-- or --COO--p--C6 H4 ; ring A is a benzene ring or trans-1,4-cyclohexylene; ring B is a benzene ring or when X2 is --COO-- and X1 is a single covalent bond, --COO-- or --CH2 CH2 --, ring B also can be trans-1,4-cyclohexylene; Z1, Z2 and Z3 individually are hydrogen or when positioned on a benzene ring which is not linked directly with a further ring via a single covalent bond, Z1, Z2 and Z3 also can be halogen, cyano or methyl; Y2 is cyano, nitro, 2,2-dicyanovinyl or when Y1 is hydrogen Y2 also can be 2,2-dicyano-1-methylvinyl; Y1 is halogen, cyano, C1 -C3 -alkyl or, when X1 includes a benzene ring or --COO-- or Y2 is nitro or at least one of Z1 and Z2 is other than hydrogen, Y1 also can be hydrogen; and R1 is C1 -C12 -alkyl or when positioned on a benzene ring R1 also can be C1 -C12 -alkoxy, their manufacture and use in liquid crystalline mixtures are described.

Liquid crystal mixture

There is described a liquid crystalline mixture for electro-optical devices which are operated according to the two-frequency matrix addressing procedure. The mixture consists of three components A, B and C, each of which contains one or more compounds. Component A has a viscosity of at most about 40 cp, a clearing point of at least about 40° C. and a dielectric anisotropy between about -2 and about +1. Component B has a dielectric anisotropy below about -2 and component C has a dielectric anisotropy above about +10, a clearing point of at least about 100° C. and there is a cross-over frequency in the total mixture of at most about 15 kHz at 20° C. Novel compounds for such mixtures and their manufacture and use are also described. The novel mixtures make possible especially high multiplex rates and short response times.

SYNTHESIS AND SOME PHYSICAL PROPERTIES OF 1-CYCLOHEXYL-2-(4 double prime -HALOBIPHENYL-4 prime -yl)ETHANES.

A series of 1-(trans-4 prime -n-alkylcyclohexyl)-2-(4 double prime -halobiphenyl-4 prime -yl)ethanes, which show nematic phases, was prepared. Their transition temperatures, enthalpies and entropies were measured. Their bulk viscosities, birefringences and dielectric constants were determined by extrapolation. The bulk viscosity as a function of the third power of the van der Waals radius of the halogeno group, the birefringence as a function of the van der Waals radius of the halogeno group, and the dielectric constants as a function of the dipole moment of the halogeno group are discussed for the 1-(trans-4 prime -n-propylcyclohexyl)-2-(4 double prime -halobiphenyl-4 prime -yl)ethanes.

SYNTHESIS AND SOME PHYSICAL PROPERTIES OF PHENYL CYCLOHEXYL ETHYLENES.

Some series of trans-1-(4-substituted phenyl)-2(trans-4-n-alkylcyclohexyl) ethylenes, which show nematic phases, were prepared. Their transition temperatures, birefringences and bulk viscosities were measured. Their properties are compared with those of o

1-(TRANS-4 prime -N-ALKYLCYCLOHEXYL)-2-(4 double prime -CYANOPHENYL)ETHANES - A NEW SERIES OF STABLE NEMATOGENS OF POSITIVE DIELECTRIC ANISOTROPY.

The synthesis and some important properties of the 1-(trans-4 prime -n-alkylcyclohexyl)-2-(4 double prime -cyanophenyl)ethanes - where n-alkyl equals C//1 to C//7 - are described.