21857-32-9

Usage

Physical state

Colorless liquid

Solubility

Insoluble in water, soluble in organic solvents

Uses

a. Intermediate in the production of pharmaceuticals
b. Intermediate in the production of agrochemicals
c. Synthesis of other organic compounds
d. Reagent in organic chemistry reactions

Bromine atom

Useful substrate for various organic transformations and reactions

Safety precautions

a. Flammable
b. Harmful if ingested
c. Harmful if inhaled
d. Harmful if absorbed through the skin

InChI:InChI=1/C8H15Br/c1-7-2-4-8(6-9)5-3-7/h7-8H,2-6H2,1H3

Upstream product

• 4331-54-8 4-methylcyclohexanecarboxylic acid 
• 34885-03-5 (4-methylcyclohexyl)methanol 

Downstream Products

• 60114-49-0 4-methylcyclohexylmethyltrimethylsilane 
• 197091-12-6 (ξ-4-methyl-cyclohexyl)-acetonitrile 

Relevant academic research and scientific papers

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.

Conformational Preferences of some Substituted Methyl Groups in Cyclohexanes as Studied by Carbon-13 Nuclear Magnetic Resonance

Low temperature 13C NMR spectra of 80 : 20 mixtures of cis and trans-4-CH3-C6H10CH2X, where -C6H10- is 1,4-disubstituted cyclohexyl and X=Br, CN, OH, OCH3, Si(CH3)3, Sn(CH3)3, Pb(CH3)3 and HgOCOCH3 have been recorded.The signals of the trans (e, e) components were assigned from the ambient temperature spectra of C6H11CH2X and the established substituent effects of an equatorial methyl group in cyclohexane.Conformational equilibria of the cis (e, a a, e) components were then computed from the intensities of the (remaining) signals (ca. 180 K) of the two conformational isomers.From these equilibria A values of CH2X were calculated, assuming additivity of conformational energies of CH3 and CH2X (the counter-poise approach).In general, these values are very similar to the value of CH3, although some trends do emerge.This study provides α, β, γ and δ effects for a wide range of axial and equatorial -CH2X groups.