Heterocycles from substituted amides. IX. 4, 5??dihydro??1, 2, 4??triazin??6??(1H) ones from 2??isocyanoacetates and hydrazine
KL Leschinsky, JP Chupp
Index: Leschinsky, Kindrick L.; Chupp, John P. Journal of Heterocyclic Chemistry, 1980 , vol. 17, p. 1621 - 1622
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Citation Number: 6
Abstract
Abstract The novel synthesis of 4, 5-dihydro-1, 2, 4-triazin-6-(1H) ones, 2, from 2- isocyanoacetates is described. This synthetic method allows the first synthesis of the unsubstituted parent ring sytem and, in general, gives 2 substituted in only the five position. The assignment of tautomeric structures (2 or 3) to the triazinone products was resolved by spectroscopic means.
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