Abstract
Derivatives of 5H-thiazolo[3.2−a]thieno[2.3−d]pyrimidine(A), 5H-[1]benzothieno[2.3−d]thiazolo[3.2−a]pyrimidine (B), 4H-thiazolo[3.2−a]thieno[3.2−e]pyrimidine (C) and 5H-[1]benzo-thieno[3.2−e]thiazolo[3.2−a]pyrimidine (D) were synthesized by various methods. Similar reactions are leading to derivatives of thieno[2′.3′∶4.5]pyrimido[2.1−b][1.3]thiazine (E) and [1]benzothieno[2′.3′∶4.5]pyrimido[2.1−b][1.3]thiazine (F).C, D, E, andF are new heterocyclic ring systems. Detailed papers will appear soon.
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Sauter, F., Deinhammer, W. Synthese von Thiazolo[3,2−a]thieno[2,3−d]pyrimidin-Derivaten. Monatshefte für Chemie 105, 452–456 (1974). https://doi.org/10.1007/BF00907395
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DOI: https://doi.org/10.1007/BF00907395