A series of 5H-thiazolo[3. 2-a]pyrimidin-5-ones were synthesized by the cyclization reactions of S-alkylated derivatives in concentrated H2SO4. Upon treatment of S-alkylated derivatives at different temperatures. intramolecular cyclization to 7-(substituted phenylamino)-5H-thiazolo[3. https://parisnaturalfoodes.shop/product-category/org-cannellini-beans/