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Synthesis of α-Azido-2′-hydroxychalcones from Chalcone Dibromides with Azide Ion.

✍ Scribed by Tamas Patonay; Jozsef Jeko; Eva Riman


Book ID
101937124
Publisher
John Wiley and Sons
Year
2010
Weight
35 KB
Volume
33
Category
Article
ISSN
0931-7597

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Flavonoids—38: Reaction of 2'-hydroxycha
✍ Tamás Patonay; Rezsö Bognár; György Litkei 📂 Article 📅 1984 🏛 Elsevier Science 🌐 French ⚖ 616 KB

The reaction of 2'-hydroxychalcone dibromides 1 or a-bromo-2'-hydroxychalcones 15 with sodium axide resulted in a mixture of a-axido-2'-hydroxychalcones 2, 3-aryl-S-(2-hydroxyphenyl)isoxaxoles 3, flavones 4, aurones 5 and 4-aryl-5-(2-hydroxybenxoyl)-1,2,3-triaxoles 6. The product ratio was strongly