ChemInform Abstract: Synthesis and Structure of Pyrimido-1,2,4-triazines.
Abstract
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ChemInform Abstract
A lot of various fused isomeric title compounds, e.g. (IV) and (IX), are prepared. (IX) is also synthesized by deamination of (IV) and, in a one-pot procedure, by cyclization of the acids (VII) using Ac2O/NaO- Ac.