1,3′-diethy 1-4,2′-quinolylthiacyanine iodide as a “thiazole orange” analogue for nucleic acid staining

Oxalic acid as a versatile catalyst for

Oxalic acid as a versatile catalyst for one pot facile synthesis of 3,4-dihydropyrimidin-2-(1H)-ones and their thione analogues

✍ Jaiprakash N. Sangshetti; Devanand B. Shinde; Nagnnath D. Kokare 📂 Article 📅 2008 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 242 KB 👁 2 views

## Abstract magnified image 3,4‐Dihydropyrimidin‐2‐(1__H__)‐ones and their thione analogues are synthesized from the condensation of aromatic aldehydes, β‐dicarbonyl compound and urea or thiourea in presence of 5 mol% of oxalic acid in ethanol‐water (1:2; v/v) under mild reaction conditions. The y