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Synthesis of 3,4‐Dihydropyrimidine‐2(1 H )‐thiones and Quinazolin‐4(3 H )‐ones over Yb(III)‐Resin Catalyst Under Solvent‐free Conditions

✍ Scribed by Jiang, Zhidong; Chen, Ruifang


Book ID
120427658
Publisher
Taylor and Francis Group
Year
2005
Tongue
English
Weight
112 KB
Volume
35
Category
Article
ISSN
0039-7911

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Synthesis of 3,4-dihydropyrimidin-2(1H)-
✍ Atul Kumar; Ram Awatar Maurya 📂 Article 📅 2007 🏛 Elsevier Science 🌐 English ⚖ 164 KB

A Ziegler-Natta catalyst system (TiCl 4 -MgCl 2 /magnesium chloride-methanol adduct) was efficiently found to catalyze the three component Biginelli reaction of an aldehyde, ␤-keto ester, and urea or thiourea under solvent free conditions to afford the corresponding 3,4-dihydropyrimidin-2-(1H)-ones