Photochromic properties of some N-substituted 3,3-dimethyl-6?-nitroindoline-2-spiro-2?-2H-chromenes

Autor: O. R. Khrolova, M. A. Gal'bershtam, G. K. Bobyleva, N. M. Przhiyalgovskaya, N. N. Suvorov, I. B. Lazarenko
Rok vydání: 1977
Předmět:
Zdroj: Chemistry of Heterocyclic Compounds. 13:1309-1313
ISSN: 1573-8353
0009-3122
DOI: 10.1007/bf00469891
Popis: A number of photochromic 1-carbethoxymethyl-3,3-dimethyl-6′-nitroindoline-2-spiro-2′-2H-chromenes were synthesized. The introduction of a carbethoxymethyl substituent at the nitrogen atom instead of a methyl group somewhat increases the rate of dark decolorization of the photomerocyanines without appreciably affecting the spectral characteristics. The results are compared with the analogous spectral-kinetic characteristics of 1-phenyl-substituted compounds.
Databáze: OpenAIRE