ISSN:
0941-1216
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
(N-Phenyl-aza-crown)-ethenyl-acridines - Complexing Chromoionophores and Precursors for Deep Blue Coloured HemicyaninesAromatic aldehyde derivatives of N-phenyl-aza-15-crown-5 and N-phenyl-aza-18-crown-6 (1a-b) are condensed with 9-methylacridine to give yellow phenyl-ethenylacridine derivatives 3a-b which are reversibly converted by protonation into deep blue colored hemicyanines, Using 9,10-dimethylacridinium perchlorate in the condensation with the crown ether aldehyde 1 the blue hemicyanine 6 is directly obtained. UV/VIS absorption spectra of the basic/acidic forms of the acridine derivatives are presented. The complex formation of the crown ether derivatives with Na+ and K+ are studied using 1H-NMR and UV/VIS spectroscopy.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.199733901134
