4-[(Pyridin-3-ylmethylene)amino]phenyloctadecanoate

Abstract

A new Schiff base 4-[(pyridin-3-ylmethylene)amino]phenyloctadecanoate was synthesized and its IR, 1H NMR, 13C NMR and MS spectroscopic data are presented

Synthesis of New Schiff Base Ether: p-n-(Dimethylamino)-benzylidene-p-dodecyloxyaniline

“…Typical examples include Schiff base esters consisting of an ester linkage at one end and different substituents residing at the other end along the long molecular axis. As a continuation of our previous investigations [2][3][4][5][6][7][8][9], in this paper we report a new Schiff base ether with a potential to exhibit mesomorphic properties. Due to the presence of the dimethylamino group, this molecule may also serve as a mesogenic charge-transfer donor [10].…”

4-{[(4-Iodophenyl)imino]methyl}phenyl Octadecanoate

“…NMR spectra were recorded in CDCl 3 on a Bruker 400 MHz Ultrashield Spectrometer. In analogy to a recently published procedure [9][10][11][12], a solution of 4-hydroxybenzaldehyde (1.22 g, 10 mmol) and 4-iodoaniline (2.19 g, 10 mmol) in absolute ethanol (70 mL) was heated under reflux for 3 h. Schiff base 1 thus obtained was recrystallized from absolute ethanol. Then, Schiff base 1 (0.66 g, 2 mmol) in dimethylformamide (DMF) (2 mL), was added into a solution of octadecanoic acid (0.57 g, 2 mmol) and 4-dimethylaminopyridine (DMAP) (0.12 g, 1 mmol) in dichloromethane (20 mL).…”

4-({[4-(Methylthio)phenyl]methylene}amino)phenyl Dodecanoate

“…In the previous studies, we discovered that azomethine and ester are useful connecting units for generating mesomorphism in thermotropic liquid crystals with two and three aromatic rings. Aromatic azomethine ester comprising of different polarity of substituents has been known to either promote or suppress the mesomorphic properties [6][7][8] In analogy to a recently published procedure [9][10][11][12], a solution of 4-(methylthio)benzaldehyde (0.76 g, 5 mmol) and 4-aminophenol (0.55 g, 5 mmol) in methanol (40 mL) was heated under reflux for an hour. Schiff base 1 thus obtained was recrystallized from absolute ethanol.…”