Synthesis of some novel quinone diimine derivatives of benzo‐15‐crown‐5 for application in Hg²⁺ recognition

Abstract

A series of novel fluoroionophore bearing derivatives of benzo-15-crown-5 were synthesized by the amination of benzo-15-crown-5 followed by condensation with different quinones in the presence of titanium tetrachloride (TiCl4 ) and 1,4-diazabicyclo-[2.2.2]octane. The compounds were characterized by infrared, (1) H and (13) C nuclear magnetic resonance, mass spectroscopy and elemental analysis. Absorption and fluorescence spectral characteristics of these compounds were studied. It was observed that the anthraquinone derivative was acting as an Hg(2+) ion sensor.

Multifunctional membranes based on photosensitive crown-ether derivatives with advanced properties

“…Moreover, the numerous works concerning self-assembled monolayers of macrocyclic complexes with inorganic and organic molecules and ions have been published recently by various research groups worldwide [38][39][40][41]. The numerous crown-containing compounds with various substituents are promissing for application in molecular devices [42], chromatography [43], catalysis [44,45], biomedical fields [46,47], photovoltaics [48,49], hybrids [50,51] and special [52][53][54] materials. …”

Novel dibenzo-18-crown-6 ether functionalized bis-benzimidazole derivatives: synthesis and antifungal evaluation

“…In continuation of our efforts towards synthesis of new crown ether functionalized molecules and study of their applications [31][32][33][34][35], we report herein synthesis of novel crown ether functionalized benzimidazole derivatives from 4,4 0 -diformyl dibenzo-18-crown-6 ether with substituted ortho-phenylene and pyridine diamines using sulfamic acid as catalyst (Scheme 2). Furthermore, the synthesized compounds were screened for antifungal activity against selected Aspergillus niger, Trichothecium sp., Rhizopus sp., and Sclerotium rolfsii fungi species.…”

Synthesis and Cation Recognition Study of Novel Benzo Crown Ether Functionalized Enamine Derivatives

“…In prolongation of our efforts for the synthesis of novel crown ether functionalized molecules and their photo physical study [26][27][28][29] , we report herein synthesis of new benzo Initially, the synthesis of starting materials 4-amino benzo dibenzo 18-crown-6 ether (3) and 4-amino benzo 18-crown-6 ether (6) from dibnezo 18-crown-6 ether and benzo 18-crown-6 ether were carried out respectively [26,30] .…”