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Production and separation of Astatine Radionuclides: Some new addition to Astatine Chemistry

✍ Scribed by Kamalika Roy; Susanta Lahiri


Book ID
103817063
Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
197 KB
Volume
66
Category
Article
ISSN
0969-8043

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A new conjugated addition of trialkyl ph
✍ Ashraf A. Sediek; Abeer A. Shaddy; Wafaa M. Abdou 📂 Article 📅 2011 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 313 KB

## Abstract A new and efficient conjugate addition of trimethyl and triethyl phosphites to 3‐ω‐azidoacetylcoumarin **(****1****)** has been studied. The reaction proceeded smoothly at r.t. furnishing 1,2,3,4‐triazaphosphole coumarin derivatives **4a**, **4b** in ∼75% yields. Linear substituted tria