178697-36-4

Upstream product

• 629-11-8 1,6-hexanediol 
• 350-46-9 4-Fluoronitrobenzene 
• 4286-55-9 1-bromo-6-hexanol 
• 824-78-2 4-nitrophenol sodium salt 
• 100-02-7 4-nitro-phenol 
• 40145-10-6 1-iodohexan-6-ol 
• 2009-83-8 6-chloro-1-hexanol 

Downstream Products

• 863989-55-3 4-((S)-8-Methyl-decyloxy)-phenylamine 
• 1638612-05-1 6-(4-nitrophenoxy)hexyl trifluoromethanesulfonate 
• 1638612-16-4 1-[(6-fluorohexyl)oxy]-4-nitrobenzene 
• 246857-53-4 6-(4-nitro-phenoxy)-hexanal 

Relevant academic research and scientific papers

Three armed star mesogens based on 1,3,5-benzenetricarboxylic acid: Synthesis and mesophase characterization

A series of star mesogens based on 1,3,5-benzenetricarboxylic acid central core, side arms containing two phenyl rings, linked through azomethine groups and hexamethylene spacers, which connect the central core and side arms were synthesised via divergent

Preparation and characterization of crosslinked azobenzene liquid-crystalline polymer fibers

We report the synthesis and physical properties of crosslinked liquid-crystalline polymer (CLCP) fibers consisting of a liquid-crystalline monomer and an acrylate monomer with a hydroxyl group that acts as a reactive site for crosslinking. By differential

Preparation method and application of azobenzene monomer capable of being subjected to Diels-Alder addition reaction

The invention belongs to the technical field of polymer materials, and particularly relates to a preparation method and application of an azobenzene monomer capable of being subjected to a Diels-Alderaddition reaction. The preparation method comprises the

Method for preparing initiating agent monomer containing azobenzene structure

The invention discloses an azobenzene compound and a synthesis method thereof.The synthesis method in the technical scheme includes the steps that 4-nitrophenol, halohydrin and potassium hydroxide serve as raw materials to synthesize p-nitrobenzene oxygen alcohol; the p-nitrobenzene oxygen alcohol, iron powder and ammonium chloride are reacted to obtain p-aminophenyl oxygen alcohol; a typical diazo coupling reaction is carried out to obtain solid product 4-acrylic acid (N-methyl amino) ethyl alcohol-4'-aminoethanol-azobenzene; the products, 2-bromoisobutyryl bromide and triethylamine are reacted to obtain the final product 4-acrylic acid (N-methyl amino) ethyl alcohol-4'-bromoisobutyric acid alcohol ester base-azobenzene, and washing and vacuum drying are carried out.The azo compound contains azobenzene photochromic groups, carbon-carbon double bonds and active-tail-end bromine atoms at the same time, can serve as a self-trigger monomer to synthesize branched polymers containing the functional azobenzene structures with the atom transfer radical polymerization (ATRP) method, and has potential application photoresponse polymers.

Odd-even behavior of ferroelectricity and antiferroelectricity in two homologous series of bent-core mesogens

Two chiral bent-core mesogens Pn-O-PIMB(n- 2)* (n= 9 and 10) and their oxygen analogues Pn-O-PIMB(n - 2)*-(n - 4)O (n = 8, 9, and 10) with ω-[(S)-amyloxy]alkoxy terminal groups were prepared, and their phase structures were investigated by means of electr

A new strategy for synthesis of polymeric supports with triazene linkers

A new strategy based on the use of diethylamine triazenes for stabilization and generation of polymer supported diazonium ions was described. New economical syntheses of four new polymeric supports with 3- and 6-carbon atom spacers and triazene linkers derived from meta- and para-aminophenol were described and compared to the traditional methods. The possible application of the polymer bound triazene masked diazonium salts as supports for immobilization of secondary amines (nortropine and 4-piperidinole and their esterification and oxidation), and as amine scavengers was shown. The new supports with meta-C3-T2 and para-C3-T2 linkers showed higher loadings and typically gave products with good yields and purities.

Solvent polarity across weakly associating interfaces

Molecular ruler surfactants, solvatochromic probes of solvent polarity, have been used to examine changes in solvent polarity across weakly associating liquid/liquid interfaces. The water/alkane interfaces were formed between an aqueous subphase and either cyclic (cyclohexane and methylcyclohexane) or linear (octane and hexadecane) alkanes. Resonance-enhanced second-harmonic generation was used to collect effective excitation spectra of species adsorbed to these interfaces. As surfactants lengthened, the surfactant probe sampled an increasingly nonpolar environment as evidenced by an excitation wavelength that shifted toward the alkane limit. Data suggest that all four water/alkane interfaces are molecularly sharp (9 Aì?), but that differences in the solvent molecular structure alter the transition from aqueous to organic solvation across the interface. Polarity across two interfaces (cyclohexane and hexadecane) changes gradually over the distance spanned by ruler surfactants. In contrast, the transitions at the interfaces between water and methylcyclohexane and octane appear much more abrupt. These findings appear to correlate with each organic solvent's ability to pack and associated free volume. More free volume in the organic phase leads to a more abrupt water/alkane interface. Results are interpreted on the basis of recent molecular dynamics simulations examining polarity at different water/monolayer interfaces.

Synthesis of polymeric supports with spacer-modified triazene linkers: Aldol and Grignard reactions of immobilized nortropinone

Four new polymeric supports with 3- and 6-carbon atom spacers and triazene linkers derived from meta- and para-aminophenol were synthesized from commercial Merrifield polymer. The supports could be used for immobilization of secondary amines in SPOS. A new strategy based on the use of diethylamine triazenes as masked precursors for the generation of polymer-supported diazonium ions was used. The performance of the new linkers was tested on Grignard and aldol reactions of solid-phase immobilized nortropinone. The new supports with C3-T2 linkers gave products with better yields and purities than the classical T2 supports or the supports with the C6-T2 linkers.

Synthesis and in vitro pharmacology of substituted quinoline-2,4-dicarboxylic acids as inhibitors of vesicular glutamate transport

The vesicular glutamate transport (VGLUT) system selectively mediates the uptake of L-glutamate into synaptic vesicles. Uptake is linked to an H+-ATPase that provides coupling among ATP hydrolysis, an electrochemical proton gradient, and glutamate transport. Substituted quinoline-2,4-dicarboxylic acids (QDCs), prepared by condensation of dimethyl ketoglutaconate (DKG) with substituted anilines and subsequent hydrolysis, were investigated as potential VGLUT inhibitors in synaptic vesicles. A brief panel of substituted QDCs was previously reported (Carrigan et al. Bioorg. Med. Chem. Lett. 1999, 9, 2607-2612)1 and showed that certain substituents led to more potent competitive inhibitors of VGLUT. Using these compounds as leads, an expanded series of QDC analogues were prepared either by condensation of DKG with novel anilines or via aryl-coupling (Suzuki or Heck) to dimethyl 6-bromoquinolinedicarboxylate. From the panel of almost 50 substituted QDCs tested as inhibitors of the VGLUT system, the 6-PhCH=CH-QDC (Ki = 167 μM), 6-PhCH2CH2-QDC (Ki = 143 μM), 6-(4′-phenylstyryl)-QDC (Ki = 64 μM), and 6-biphenyl-4-yl-QDC (Ki=41 μM) were found to be the most potent blockers. A preliminary assessment of the key elements needed for binding to the VGLUT protein based on the structure-activity relationships for the panel of substituted QDCs is discussed herein. The substituted QDCs represent the first synthetically derived VGLUT inhibitors and are promising templates for the development of selective transporter inhibitors.

Molecular rulers: New families of molecules for measuring interfacial widths

Homologous series of solvatochromic neutral alcohols and ionic sulfates are synthesized and characterized. Each surfactant series consists of hydrophobic, p-nitroanisole-based chromophores attached to polar or ionic headgroups by n-alkyl spacers. UV absorption measurements show that the optical properties of surfactant chromophores closely track those of the parent chromophore. Interfacial tension measurements are used to calculate surface excess concentrations of ionic surfactants adsorbed to an aqueous-cyclohexane interface. With a hydrophobic chromophore, a hydrophilic headgroup, and a variable-length, alkyl spacer, these surfactants have the potential to function as molecular rulers: probes of molecular-scale variation in solvation forces across condensed-phase interfaces. Changing the separation between the hydrophobic, solvatochromic probe and the hydrophilic headgroup should enable different members of a homologous series to span different interfacial widths, thus exposing the chromophore to different chemical environments. This idea is explored by using surface-specific, nonlinear optical spectroscopy. Resonant second harmonic spectra of p-nitroanisole and the surfactant product 4a adsorbed to an aqueous-cyclohexane interface show the surfactant spectrum blue-shifted 9 nm relative to the spectrum of adsorbed p-nitroanisole. On the basis of chromophore solvatochromism, these results are consistent with a less polar environment surrounding the surfactant chromophore. Significant differences in interfacial solvation resulting from a ～5 A separation between the surfactant headgroup and chromophore support recently proposed models of molecularly sharp, microscopically flat aqueous-alkane interfaces.