50687-64-4

Upstream product

• 111973-82-1 benzoic acid, 4-(phenylmethoxy)-4-pentylphenyl ester 
• 14938-35-3 4-n-pentylphenol 
• 99-96-7 4-hydroxy-benzoic acid 
• 56442-22-9 benzyl 4-benzyloxybenzoate 
• 1486-51-7 p-(benzyloxy)benzoic acid 

Downstream Products

• 115498-61-8 4-(4-Propyl-cyclohex-1-enecarbonyloxy)-benzoic acid 4-pentyl-phenyl ester 
• 115498-65-2 4-(4-Pentyl-cyclohex-1-enecarbonyloxy)-benzoic acid 4-pentyl-phenyl ester 
• 105343-75-7 5-Pentyl-pyrimidine-2-carboxylic acid 4-(4-pentyl-phenoxycarbonyl)-phenyl ester 
• 50687-45-1 benzoic acid 4-cyano-4-<(4-pentylphenoxy) carbonyl>phenyl ester 
• 115498-75-4 4-(4-Butyl-cyclohex-3-enecarbonyloxy)-benzoic acid 4-pentyl-phenyl ester 
• 115498-72-1 4-(4-Propyl-cyclohex-3-enecarbonyloxy)-benzoic acid 4-pentyl-phenyl ester 
• 123704-55-2 C₃₆H₄₀N₂O₄ 
• 123704-53-0 C₃₄H₃₆N₂O₄ 
• 105343-77-9 p-Pentylphenyl p-(5-heptylpyrimidinoyl-2-oxy)benzoate 
• 106307-68-0 p-Amylphenyl p-(5-Phenyl-2-pyrimidylcarbonyloxy)benzoate 

Relevant academic research and scientific papers

Smectic-smectic phase transitions in binary liquid-crystalline mixtures of DB5-T8

We have used high-resolution x-ray diffraction and ac calorimetry to study the liquid-crystalline smectic-A-smectic-A phase transitions in binary mixtures of polar mesogenic compounds DB5 phenyl ester> and T8 ethenyl> phenyl ester>.A detailed synthesis for each of these compounds is presented.The smectic A1 phase in this system shows two collinear diffuse x-ray maxima at incommensurate wave vectors, indicating a tendency to form the predicted Ai1 phase with two strongly coupled density modulations having incommensurate wavelengths.The Ad peak position, while both temperature and concentration dependent, is remarkably constant along the N-Ad phase boundary.In the vicinity of 16 mol percent T8, both the x-ray and heat-capacity results are reproducibly history dependent.The simultaneous observation of sharp A2 and Ad peaks most likely results from phase coexistence, but a condensed incommensurate Ai2 phase cannot be ruled out.

Facile Synthesis of 4-alkylphenyl 4-(4-Nitrobenzoyloxy)Benzoate (DBXNO2) and its Cyano Analog (DBXCN)

Two series of unsymmetrical phenylbenzoate analogs of thermotropic liquid crystals, namely, 4-alkylphenyl 4(4-nitrobenzoyloxy) benzoate (DBXNO2) and its cyano analog (DBXCN) are synthesized by a new route from benzyloxybenzoic acid.The first ester linkage of these phenylbenzoates is made by a condensation reaction between benzyloxybenzoic acid and an alkylphenol in the presence of carbodiimide and a base to give compound 6.A benzyl deprotection reaction of 6 is carried out by catalytical hydrogenation to yield compound 7.The second ester connection is performed by a condensation reaction between 7 and p-cyano or p-nitrobenzoyl chloride.This reaction sequence leads to the final products, DBXNO2 or DBXCN, in an overall yield of 50percent or 37percent, respectively.