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1,4-Conjugate Additions of Methoxyamine and 1,1-Dimethylhydrazine to Hex-3-yne-2-one: A Facile Synthesis of Functionalized Isoxazole and Pyrazole Precursors.

✍ Scribed by Ronald R. Sauers; Susan D. Van Arnum


Publisher
John Wiley and Sons
Year
2005
Weight
15 KB
Volume
36
Category
Article
ISSN
0931-7597

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A new conjugated addition of trialkyl ph
✍ Ashraf A. Sediek; Abeer A. Shaddy; Wafaa M. Abdou πŸ“‚ Article πŸ“… 2011 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 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