491838-84-7

Upstream product

• 629-72-1 pentadecyl bromide 
• 123-08-0 4-hydroxy-benzaldehyde 

Downstream Products

• 491838-89-2 4-(n-pentadecyloxy)benzaldoxime 
• 865487-92-9 4-n-pentadecyloxybenzonitrile oxide 
• 1207667-33-1 C₂₃H₃₇N₃O₂ 

Relevant academic research and scientific papers

Synthesis and characterization of mesogenic 1,3,4-oxadiazole derivatives

A synthesis of homologous series of mesogenic 2-amino-5-alkkloxyphenyl-1,3, 4-oxadiazoles were prepared by the oxidative cyclisation of alkyloxybenzaldehyde semicarbozones (4) using chloramines-T (CAT) as osidate via intramolecular cycloaddition reaction. The reaction proceeds in better yield (75-85%) giving the product as solid with low melting points. The optical texture studies have been carried out using Leitz polarizing microscope to identify the liquid crystalline phases at different temperatures and it is found that the synthesized compounds exhibit nematic (N), smectic C (Sm C), smectic I (Sm I) and smectic G (Sm G) phases, sequentially at different temperatures. Copyright Taylor & Francis Group, LLC.

Herringbone and helical self-assembly of π-conjugated molecules in the solid state through CH/π hydrogen bonds

Self-organization of organic molecules through weak noncovalent forces such as CH/π interactions and creation of large hierarchical supramolecular structures in the solid state are at the very early stage of research. The present study reports direct evid

NMR-based molecular ruler for determining the depth of intercalants within the lipid bilayer. Part I. Discovering the guidelines

The development of "molecular rulers" would allow one to quantitatively locate intercalants within the liposomal bilayer. To this end, we have attempted to correlate the 13C NMR chemical shift of a polarizable "reporter" carbon (e.g., carbonyl) of the intercalant-with the ET(30) polarity it experiences, and with its Angstrom distance from the interface. This requires families of molecules with the same two "reporter carbons" separated by a fixed distance, residing at various depths/polarities within the bilayer. The families studied included 4,4-dialkylcyclohexa-2,5-dienones 1, benzenediacetic esters 15, benzenedipropionic esters 17, 4-alkoxybenzaldehydes 19 and methyl 4-alkoxybenzoates 22. These compounds possessed the following characteristics: (1) a planar backbone; (2) polar/hydrophilic "head" groups; (3) modular hydrophobic tails; (4) large changes in the 13C NMR chemical shift (Δδ) of the reporter atoms with solvent polarity. These studies revealed a fifth requirement, namely: (5) the reporter carbons must not be strongly conjugated, lest it reflect the charge build-up at another site within the conjugated system.

Giant domain formation in a thin film of bisstyrylanthracene derivatives by a simple melt process

Bisstyrylanthracene derivatives with long alkyl side chains (BSA), which were prepared into the thin films composed of giant anisotropic domains by simple melt process, showed interesting property. The derivatives that changed the chains length and chains

Synthesis and mesomorphic behaviour of 3-[4-alkyloxyphenyl]-5-[3,4- ethylenedioxybenzyl]-2-isoxazolines

A simple homologous series of 3-[4-alkyloxyphenyl]-5-[3,4- methylenedioxybenzyl]-2-isoxazolines having chiral sources have been synthesized by the reaction of nitrile oxides isolated from the dehydrogenation of 4-alkyloxyphenyl aldoximes using chloramine-T with safrole. Synthesized compounds structures have been confirmed by 1H NMR, 13C NMR, mass spectral analysis and optical texture studies have been carried out using Leitz polarizing microscope. The synthesized compounds exhibit cholesteric phase or chiral nematic phase (N*), smectic A (SA) and chiral smectic phases (SC*), some at and just above room temperature.

Synthesis and characterization of new mesogenic oximes

Synthesis of a homologous series of mesogenic 4-(n-alkoxy)benzaldehyde oximes starting from 4-hydroxybenzaldehyde with n-alkyl bromide under phase transfer condition is described. Optical texture studies have been carried out using Leitz polarizing microscope and it is found that the synthesized compounds exhibit Smectic B, Smectic I and Smectic H phase.