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An Easy Access to 2-Amino-5,6-dihydro-3H-pyrimidin-4-one Building Blocks: The Reaction under Conventional and Microwave Conditions.

✍ Scribed by Konstantin S. Ostras; Nikolay Yu. Gorobets; Sergey M. Desenko; Vladimir I. Musatov


Publisher
John Wiley and Sons
Year
2007
Weight
23 KB
Volume
38
Category
Article
ISSN
0931-7597

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An easy route to 2-substituted-2,3-dihyd
✍ I. Forfar; J. Guillon; S. Massip; J.-M. Léger; C. Jarry; J.-P. Fayet 📂 Article 📅 2001 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 56 KB

## Abstract The isomeric 2‐substituted‐7(5)‐methyl‐2,3‐dihydro‐5(7)__H__‐oxazolo[3,2‐__a__]pyrimidin‐5‐ones **3a‐b** and 7‐ones **2a‐b,7a** were synthesized by cyclocondensation from the 5‐substituted‐2‐amino‐2‐oxazolines **1a‐b** with biselectrophiles. In boiling ethanol, the reaction of **1a‐b**