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Ethyl 5-substituted-3-isoxazolecarboxylates as starting materials for a convenient route to 3(2H)furanones and 3(2H)iminofuranes.

✍ Scribed by Pier Giovanni Baraldi; Achille Barco; Simonetta Benetti; Stefano Manfredini; Gian Piero Pollini; Daniele Simoni

Publisher
Elsevier Science
Year
1984
Tongue
French
Weight
186 KB
Volume
25
Category
Article
ISSN
0040-4039

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✦ Synopsis

Cyclodehydration of y-hydroxy-fl-enaminoketones derived from 5--substituted-3-isoxasolemethanols leads to 3(2H)furanones or 3(2H)iminofuranes depending on the substitution pattern and on the reaction conditions.

📜 SIMILAR VOLUMES

An easy route to 2-substituted-2,3-dihyd
An easy route to 2-substituted-2,3-dihydro-5(7)H-oxazolo[3,2-a]pyrimidin-5-ones and 7-ones starting from the corresponding 2-amino-2-oxazolines
✍ 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**