Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 530-66-5, is researched, Molecular C9H9NO4S, about Synthesis, characterization and photochromic properties of novel spirooxazines, the main research direction is spiro indoline naphthoxazine preparation photochromism merocyanine.Quality Control of quinoliniumhydrogensulphate.
A series of spirooxazine compounds were synthesized via condensation reaction of 1,3,3-trimethyl-2-methyleneindoline with 1-nitroso-2,7-naphthalenediols, followed by esterification with acyl chlorides. Absorption bands in the visible region were observed in UV spectra (λmax: 530-665 nm), which were red-shifted as the polarity of solvent increased. Furthermore, these absorption bands also red-shifted with the increase of the electron-donating ability of the 6′-heterocycle substituent, but were nearly unaffected by 9′-acyloxy. Thermal decoloration showed that the thermal relaxation progress of the photomerocyanine followed 1st order kinetics and the relaxation time was tuned in a broad range from 125-1886 s (at 20°) by changing electron-donating power on 6′-heterocycle and 9′-acyloxy.
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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com