177424-31-6

Basic information

• Product Name: Benzoic acid, 4-butoxy-, 4-formyl-3-hydroxyphenyl ester
• CAS NO: 177424-31-6
• Molecular Formula: C18H18O5
• Molecular Weight: 314.338
• Mol File: 177424-31-6.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: Benzoic acid, 4-butoxy-, 4-formyl-3-hydroxyphenyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Benzoic acid, 4-butoxy-, 4-formyl-3-hydroxyphenyl ester(177424-31-6)
• EPA Substance Registry System: Benzoic acid, 4-butoxy-, 4-formyl-3-hydroxyphenyl ester(177424-31-6)

Safety Data

• Hazardous Substances Data: 177424-31-6(Hazardous Substances Data)

Upstream product

• 1498-96-0 4-butoxybenzoic acid 
• 95-01-2 2,4-Dihydroxybenzaldehyde 
• 33863-86-4 4-(n-butyloxy)benzoyl chloride 
• 99-96-7 4-hydroxy-benzoic acid 

Downstream Products

• 1208940-30-0 C₂₀H₂₀N₄O₄ 
• 1208940-51-5 C₂₄H₂₃N₃O₅ 
• 108544-50-9 N-<4-(4-butoxybenzoyloxy)-2-hydroxybenzylidene>-4-butylanilide 

Relevant articles and documents

Synthesis, characterization, and mesomorphic properties of new liquid-crystalline compounds involving ester-azomethine central linkages, lateral substitution, and a thiazole ring

In continuation with our work on liquid crystals with unconventional molecular structures, two homologous series that have 1,4-disubstitution and 1,3,4-trisubstitution in the central phenyl ring, such as 2[(4-n-alkoxy- benzyloxy) phenyl azomethine]-5-methyl thiazole and 2-[(4-n-alkoxy-benzyloxy)-2- hydroxy salicyladimine]-5-methyl thiazole, have been synthesized. They have been characterized by elemental analysis, FT-IR, 1HNMR, 13CNMR, and mass spectrometry. The liquid-crystalline behavior of these compounds was observed by differential scanning calorimetry (DSC) and polarizing microscopy. All the compounds of the 1,4-disubstituted series show an enantiotropic nematic phase only, whereas the compounds of the 1,3,4-trisubstituted series show smectic and nematic phases. Some mesogens with a lateral hydroxy group were also synthesized to evaluate the effect of this group on melting point, transition temperatures, and mesophase morphology.

End-on and side-on nematic liquid crystal dendrimers

A group of nematic materials based on poly(propyleneimine) dendrimers (PPI) containing two types of mesogenic subunits were synthesized. The presence of different types of mesogenic group, the topology of the attachment to the core (end-on and side-on), and the chemical nature of the linking connection to the PPI scaffold (imine or amide) were used to tailor the mesomorphic properties. The materials were characterized by a variety of techniques including 1H, 13C NMR spectroscopy, GPC, MALDI-TOF MS, DSC, POM, and X-ray diffraction. The crystalline state, when it exists, was found to be suppressed for most of the materials once they had undergone the first transition to the Isotropic phase. The majority of the compounds exhibited glass transitions near to or lower than room temperature and an accompanying wide temperature range mesophaae. All of the side-on dendrimers synthesized exhibit a nematic mesophase whereas end-on dendrimers exhibit different mesophases depending on the length of the terminal chain of the mesogenic unit (nematic for n = 2, 4, 5). The 2H NMR technique was used to investigate the symmetry of the nematic phase formed by the side-on dendrimers (G = 3). These studies revealed that the symmetry of the nematic phase is uniaxial. They also allow the investigation of the orientational order of the phase and the rate of field-induced director alignment.

New Liquid Crystalline Homologous Series Exhibiting the Smectic C Phase

A liquid cristalline homologous series of N--4-butylanilides and their hydroxyl derivatives at the 2-position were synthesized, and then the liquid-crystalline-phase transitions were determined using a differential scanning calorimeter and a polarizing microscope.All of the members exhibit a nematic phase, and a smectic C phase can be observed for the homologoues with a relatively long alkoxy chain.