ArticleJournal of fluorescence2017
Synthesis, X-ray and Fluorescence Characteristics of Pyrimido[5,4-e]thiazolo[3,2-a]pyrimidine as a Novel Heterocyclic System.
Article in Journal of fluorescence, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
Derivatives of a new heterocyclic system, pyrimido[5,4-e]thiazolo[3,2-a]pyrimidine 3, were prepared by sequential treatment of ethyl 4-chloro-2-(methylthio)pyrimidine-5-carboxylate 1 with 4,5-dihydrothiazol-2-amine 2 and various secondary amines. Single crystal X-ray analysis confirmed the structure of the regioisomer 3. The photophysical characterization of these new compounds was performed by UV/VIS absorption and fluorescence emission spectroscopy. Out of six derivatives studied, only four products 4a-d showed relatively strong fluorescence intensity. The relevant photophysical parameters for all derivatives in this series, including quantum yields and Stokes shifts for the best fluorophores are given.
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Registered trials
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