33905-65-6

Upstream product

• 148731-06-0 4-Heptyloxy-benzoic acid 4-benzyloxy-phenyl ester 
• 40782-54-5 4-heptyloxybenzoyl chloride 
• 123-31-9 hydroquinone 
• 120-47-8 Ethyl 4-hydroxybenzoate 
• 629-04-9 1-Bromoheptane 
• 111-70-6 n-heptan1ol 
• 15872-42-1 4-heptyloxybenzoic acid 
• 154845-73-5 4-heptyloxy-benzoic acid ethyl ester 
• 99-96-7 4-hydroxy-benzoic acid 
• 103-16-2 4-Benzyloxyphenol 

Downstream Products

• 33903-96-7 C₃₃H₄₀O₆ 
• 33905-72-5 C₂₈H₃₀O₆ 
• 1427167-71-2 4-acryloyloxyphenyl 4-heptyloxybenzoate 
• 1427167-74-5 4-(2,3-epoxypropoxy)phenyl 4-heptyloxybenzoate 
• 1616081-53-8 4-(cyanomethoxy)phenyl 4-(heptyloxy)benzoate 

Relevant academic research and scientific papers

Synthesis of V-Shaped liquid crystal benzoates

V-Shaped mesogens, benzene-1,2-diylbis[4-(4-alkoxybenzoyloxy)benzoates], were synthesized and their mesomorphic behavior was studied. For the homolog with terminal heptyloxy group, enantiotropic nematic and monotropic smectic A phases were observed; the subsequent homologs formed exclusively enantiotropic smectic A phase. It was found that the isomeric ester of benzene-1,2-dicarboxylic acid with heptyloxy groups at the phenol fragments did not possess mesomorphism.

Synthesis, mesomorphic and dielectric properties of 4-(cyanomethoxy)phenyl 4-alkoxybenzoates, 4-(cyanomethoxy)-4′-alkoxyazo- and -azoxybenzenes

Preparation methods were developed for homologs of 4-(cyanomethoxy)phenyl 4-alkoxybenzoates (C7, C8, C9), 4-(cyanomethoxy)-4′-alkoxyazo (C2, C3, C 6), -azoxybenzenes (C3, C6) whose composition and structure were proved by elemental analysis and 1H NMR spectra. 4-(Cyanomethoxy) group destabilizes the mesophase, consequently, only four among the compounds obtained exhibit the thermotropic nematic mesomorphism.

2-Hydroxybenzoic acid esters: Synthesis, complexes with Tb(III), and their luminescence characteristics

New esters of 2-hydroxybenzoic acid and 4-(4-alkoxybenzoyloxy)phenols, forming liquid crystals, were synthesized. These compounds in solution form complexes with Tb(III), exhibiting photoluminescence properties.

Mesogenic 4-acryloyloxy- and 4-(2,3-epoxypropoxy)phenyl 4-alkoxybenzoates

Procedures were developed which made it possible to synthesize in good yields homologs of 4-acryloyloxyphenyl 4-alkoxybenzoates (C3, C 5, C7, C8) and of 4-(2,3-epoxypropoxy)phenyl 4-alkoxybenzoates (C5, C7). The substituted phenylbenzoates obtained exhibit the enantiotropic nematic mesomorphism in a sufficiently wide temperature range. The studied compounds have absorption maxima in the near UV region and a high temperature of decomposition beginning.

Study of activation energy and order of reaction of some liquid crystals

Liquid crystals of the type p-phenylene-di-p-n-alkoxy benzoate have been prepared. Kissinger isothermal decomposition method has been used for determination of activation energy values of liquid crystals. Kissinger's assessment for shape index of DTA peaks is used to find the order of reaction. There is no direct relationship between the carbon atoms in terminal methylene groups and Ea values. Order of reaction value decreases with increase in heating rate upto carbon atoms 10 in the terminal methylene group but beyond this the order increases or decreases.

1,1'-Disubstituted Ferrocene-Containing Thermotropic Liquid Crystals of Structure 5-C5H4)COOC6H4XC6H4OCnH2n+1>2> (X=OOC or COO). Influence of the Orientation of the Central Ester Function on the Mesogenic Properties

The two series I and II of 1,1'-disubstituted ferrocenes which differ by the direction of the ester function included the rigid organic part were synthesized and their liquid crystal properties examined.These latter were found to be strongly dependent on the orientation of the connecting ester group and on the alkyl chain.

FERROELECTRIC SC* PHASE IN SOME BENZOATE SERIES

Several homologous benzoate series which exhibit ferroelectric smectic SC* phases have been synthesized.The used chiral acid chains were prepared from commercially available α-amino acids.The series allow us to determine the influence of the size of the substituent of the chiral carbon on the existence and the stability of the SC* phase.They also give some compounds or mixtures which display high spontaneous polarization.