Photo- and thermochromic spirans. 16. 2-Oxo-3-phenyl-5,5-dimethylspiro(1,3-oxazolidine-4,2′-[2h]chromenes)

Autor:	Luk'yanov, B. S., Nivorozhkin, L. E., Chernysh, Yu. E., Minkin, V. I.
Zdroj:	Chemistry of Heterocyclic Compounds; August 1985, Vol. 21 Issue: 8 p857-861, 5p
Abstrakt:	New spirans of the 5,5-dimethyl-3-phenyl-2-oxazolidone series that display photo-chromic properties in alcohol solutions at -80 °C were synthesized. The photoinduced forms are characterized by the presence of two long-wave absorption bands at 350–420 nm and 500–650 nm. The 1H and 13C NMR spectra were studied. Anisochronicity of the diastereotopic methyl groups of the oxazolidone ring shows up only in the 13C NMR spectra.
Databáze:	Supplemental Index
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