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Ring opening and ring-chain tautomerism in 2-carbalkoxy- and 2-acyl-2,3-dihydro-1,4-benzodioxins

✍ Scribed by Vittorio Rosnati; Aldo Salimbeni


Publisher
Elsevier Science
Year
1986
Tongue
French
Weight
549 KB
Volume
42
Category
Article
ISSN
0040-4020

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Ring-chain transformations, IX[1] Synthe
✍ Radics, Ute ;Liebscher, JΓΌrgen ;Ziemer, Burkhard ;Rybakov, Viktor πŸ“‚ Article πŸ“… 1992 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 691 KB

Thiohydrazide compounds 1 react with lactam acetals 2 or solution, however, most of them undergo a reversible ringlactim ethers 3 by condensation giving unusual zwitterionic chain transformation to novel 2-(o-aminoalkyl)-1,3,4-thiaditautomers 5 of lactam thioacylhydrazones 4. These compounds azole s