94110-73-3

Upstream product

• 59748-37-7 4'-n-pentyl-<1,1'-biphenyl>-4-carboxylic acid chloride 
• 59662-47-4 4-(4-n-pentylphenyl)benzoic acid 
• 94110-81-3 1-((R)-4-Ethoxymethyl-cyclohexylmethanesulfinyl)-4-methyl-benzene 
• 97974-03-3 trans-4-(ethoxymethyl)-1-(bromomethyl)cyclohexane 
• 71458-14-5 trans-4-bromomethyl-1-n-pentylcyclohexane 
• 3236-48-4 trans-1,4-Cyclohexanedimethanol 
• 98048-33-0 (S)-1-(4'-Pentyl-biphenyl-4-yl)-2-(4-pentyl-cyclohexyl)-2-((R)-toluene-4-sulfinyl)-ethanone 
• 94110-80-2 1-Methyl-4-((R)-4-pentyl-cyclohexylmethanesulfinyl)-benzene 

Relevant academic research and scientific papers

A New Class of Chiral Smectic Liquid Crystals: Substituted Biphenylylcyclohexylideneethanones Having an Axial Chirality

The introduction of chiral cyclohexylideneethanone unit in a potential mesomorphic structure leads to the first family of optically active liquid crystals having an axial chirality.Racemic compounds 2 were synthesized by a Wittig-type coupling between β-keto phosphonates 6 (R1 = n-C5H11) and substituted cyclohexanone 7 (R2 = H, CH3, t-Bu, OCH3, O-n-C5H11, CO2Et, OCOC6H4CN, OCOC6H4Cl).The optically active molecules 12 were prepared by a new route using the asymmetric coupling of a carbanion α to a chiral sulfoxide 9 (R2 = n-C5H11, CH2OEt) and a substituted biphenyl acid chloride (Ar = R'C6H4C6H4 with R' = n-C5H11, CH3O, n-C8H17O, CN) followed by a stereospecific pyrolytic elimination of the sulfoxide moiety.Derivatives containing only one aromatic ring were not mesomorphic in contrast to those having a biphenyl system.