94136-09-1

Basic information

• Product Name: Cyclohexanecarboxylic acid, 4-[2-oxo-2-(4'-pentyl[1,1'-biphenyl]-4-yl)ethylidene]-, ethyl ester
• CAS NO: 94136-09-1
• Molecular Formula: C28H34O3
• Molecular Weight: 418.576
• Mol File: 94136-09-1.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Cyclohexanecarboxylic acid, 4-[2-oxo-2-(4'-pentyl[1,1'-biphenyl]-4-yl)ethylidene]-, ethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Cyclohexanecarboxylic acid, 4-[2-oxo-2-(4'-pentyl[1,1'-biphenyl]-4-yl)ethylidene]-, ethyl ester(94136-09-1)
• EPA Substance Registry System: Cyclohexanecarboxylic acid, 4-[2-oxo-2-(4'-pentyl[1,1'-biphenyl]-4-yl)ethylidene]-, ethyl ester(94136-09-1)

Safety Data

• Hazardous Substances Data: 94136-09-1(Hazardous Substances Data)

Upstream product

• 17159-79-4 ethyl 4-oxocyclohexane-1-carboxylate 
• 94110-77-7 2-(4'-n-pentyl-<1,1'-biphenyl>-4-yl)-1-(dimethoxyphosphinyl)-2-ethanone 
• 40817-08-1 4-cyano-4'-pentyl-1,1'-biphenyl 

Relevant articles and documents

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.