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Synthesis, spectral-luminescence, and acid-base properties of 3-halo-7-aminocoumarins

✍ Scribed by N. A. Gordeeva; M. A. KirpichËnok; N. S. Patalakha; I. I. Grandberg

Publisher
Springer US
Year
1990
Tongue
English
Weight
710 KB
Volume
26
Category
Article
ISSN
0009-3122

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✍ L. A. Karandashova; M. A. KirpichËnok; D. S. Yufit; Yu. T. Struchkov; I. I. Gran 📂 Article 📅 1990 🏛 Springer US 🌐 English ⚖ 581 KB

The absorption and luminescence spectra of a series of 4,7-diaminocoumarins have been investigated in ethanol and acetonitrile solution. The pkJ and pkJ 1 values for several of the compounds have been measured. It has been found that the site of primary protonation is the nitrogen atom in the 7-posi