205689-93-6

Basic information

• Product Name: 2,5-DI(4-BUTYLOXYBENZYLOXY)BENZOIC ACID
• Synonyms: 2,5-DI(4-BUTYLOXYBENZYLOXY)BENZOIC ACID;2,5-Bis[(4-butoxybenzoyl)oxy]-benzoic acid
• CAS NO: 205689-93-6
• Molecular Formula: C₂₉H₃₀O₈
• Molecular Weight: 506.54
• Mol File: 205689-93-6.mol

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 2,5-DI(4-BUTYLOXYBENZYLOXY)BENZOIC ACID(CAS DataBase Reference)
• NIST Chemistry Reference: 2,5-DI(4-BUTYLOXYBENZYLOXY)BENZOIC ACID(205689-93-6)
• EPA Substance Registry System: 2,5-DI(4-BUTYLOXYBENZYLOXY)BENZOIC ACID(205689-93-6)

Safety Data

• Hazardous Substances Data: 205689-93-6(Hazardous Substances Data)

Usage

Class

Organic acid, benzoic acids

Characteristic groups

Two 4-butyloxybenzyloxy groups attached to the 2and 5-positions of the benzoic acid core

Appearance

White crystalline

Usage

Building block in organic synthesis and pharmaceutical research, development of new drugs, materials, and chemical processes

Upstream product

• 205689-89-0 benzyl 2,5-di(4'-butyloxybenzoyloxy)benzoate 
• 490-79-9 2,5-dihydroxybenzoic acid. 
• 21782-87-6 2,5-dihydroxybenzoic acid benzyl ester 

Downstream Products

• 1429519-53-8 C₃₂H₃₄O₈ 
• 131355-99-2 (but-3''-enyl) 2,5-di(4'-butyloxybenzoyloxy)benzoate 
• 210816-66-3 C₃₅H₄₀O₈ 

Relevant articles and documents

Poly[(side-on mesogen)-Alt-(end-on mesogen)]: A compromised molecular arrangement

In recent years, sequence-controlled side-chain liquid crystal polymers (SCLCPs) have gained extensive interest because mesogenic units with different lengths and distributions can form various ordered sequences, which further endow LCP materials with diverse functions. In this manuscript, a side-chain side-on maleimide-containing monomer 2,5-bis-(4-butoxy-benzoyloxy)-benzoic acid 6-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-hexyl ester (Y1801) and a side-chain end-on styrene-containing monomer 4′-[6-(4-vinyl-phenoxy)-hexyloxy]-biphenyl-4-carbonitrile (Y1802) are combined in one single macromolecular chain and orderly polymerized in an alternative sequence to form an alternating copolymer Poly(Y1801-Alt-Y1802). The chemical structure and alternating sequence of Poly(Y1801-Alt-Y1802) are confirmed by GPC and NMR techniques. The combination of DSC, POM, and WAXS data indicates that, although the side-on homopolymer PY1801 and the end-on homopolymer PY1802 both exhibit the nematic phase, their alternating copolymer Poly(Y1801-Alt-Y1802) shows an interdigitated smectic A phase, a compromised molecular arrangement instead. In addition, a strong fluorescence emission of Poly(Y1801-Alt-Y1802) is observed, which might provide this novel alternating-structured liquid crystal polymer with potential applications in luminescent materials and devices.

Homeotropically-aligned main-chain and side-on liquid crystalline elastomer films with high anisotropic thermal conductivities

Homeotropically-aligned main-chain and side-on liquid crystalline elastomer films are prepared by using LC thiol-ene and acrylate systems respectively. Evaluated by laser flash analysis, the room temperature thermal conductivities of these two LCP films in the film normal direction are both dramatically higher than those along the horizontal direction.

Polysiloxane-based liquid crystalline polymers and elastomers prepared by thiol-ene chemistry

A series of side-chain liquid crystalline polymers (LCPs) with polysiloxane backbones have been synthesized by grafting mesogenic monomers to poly[3-mercaptopropylmethylsiloxane] (PMMS) via thiol-ene click chemistry. Their properties were studied in detail by a combination of 1H NMR, gel permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, polarized optical microscopy and small-angle X-ray scattering. In comparison with the traditional hydrosilylation method which requires noble metal catalyst platinum, this newly designed thiol-ene protocol produces polysiloxane-based LCPs with only anti-Markovnikov addition products under benign conditions. Moreover, by controlling the molar ratio of PMMS and mesogenic monomers, PMMS-based LCPs can be partially functionalized, meanwhile leaving spare mercapto groups, which could be further used as cross-linking sites to prepare polysiloxane-based liquid crystalline elastomers (LCEs). Besides preparing LCE fibers with a maximum contraction of 42% at nematic-to-isotropic transition temperature, we further explored the feasibility of using surface-rubbed cells to synthesize LCE films, but it turned out that this method could uniaxially align the mesogens of preformed short polymers but not the backbone chains so that the thermal-actuation effects of these films were modest.