- RING TRANSFORMATIONS OF HETEROCYCLES. 2. RING CONTRACTION OF 5,6-DIHYDRO-4H-1,2,4,5-OXATRIAZINES INTO 1H-1,2,4-TRIAZOLES
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6-Monosubstituted 5,6-dihydro-4H-1,2,4,5-oxatriazines (3) undergo ring contraction, via elimination of H2O, to yield the respective 1H-1,2,4-triazoles (4).This transformation is envisaged to proceed via the ring-opened (E)-hydrazonoxime (5) which then suf
- El-Abadelah, Mustafa M.,Hussein, Ahmad Q.,Nazer, Musa Z.,Musa, Osama M.,Rademacher, Paul,Bandmann, Heinz
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p. 455 - 472
(2007/10/02)
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