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ZrOCl 2 · 8H 2 O as an Efficient Reagent for the Solvent‐Free Synthesis of 3,4‐Dihydropyrimidin‐2‐(1H)‐ones

✍ Scribed by Shirini, Farhad; Ali Zolfigol, Mohammad; Mollarazi, Esmail


Book ID
121234087
Publisher
Taylor and Francis Group
Year
2006
Tongue
English
Weight
78 KB
Volume
36
Category
Article
ISSN
0039-7911

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1,3-Dibromo-5,5-dimethylhydantoin as a u
✍ Mohammad Abdollahi-Alibeik; Zahra Zaghaghi 📂 Article 📅 2009 🏛 Versita 🌐 English ⚖ 160 KB

## Abstract Efficient syntheses of 3,4-dihydropyrimidin-2-(1H)-ones and the corresponding thioxo derivatives using 1,3-dibromo-5,5-dimethylhydantoin (DBH) catalysis of a one-pot three-component Biginelli reaction of aldehydes, ethyl acetoacetate, and urea or thiourea under microwave irradiation are