Synthesis and Characterization of γ-Heteroaryl-substituted Pentamethine Cyanine Dyes with Carboxy or Methoxycarbonyl Substituents at the Two Heterocyclic End Groups
作者:A. M. Mehranpour、S. Hashemnia、F. Azamifar
DOI:10.1002/jhet.1816
日期:2014.9
Seven novel pentamethinecyaninedyes with 3,5‐dimethylpyridinium‐1‐yl, pyridinium‐1‐yl, and 1‐quinolinum‐1‐yl substituents in the γ position of the methine chain containing ester or carboxylic acid groups in the ring of the dyes were synthesized via a three‐step procedure. The visible spectral behavior of the pentamethinecyaninedyes was examined in DMSO. Elemental analysis, IR, 1H‐NMR, 13C‐NMR,