AN IMPROVED PROCESS FOR THE PREPARATION OF 2-AMINO-5,8-DIMETHOXY[1,2,4]TRIAZOLO[1,5-C]PYRIMIDINE FROM 4-AMINO-2,5-DIMETHOXYPYRIMIDINE

5-Substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines are manufactured from 4-amino-2,5-dialkoxypyrimidines in an improved process in which the generation of gaseous by-products is controlled by the continuous addition of hydroxylamine as a free base.

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Bibliographic Details
Main Authors BLAND, Douglas C, HAMILTON, Christopher T
Format Patent
LanguageEnglish
French
German
Published 15.08.2018
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:5-Substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines are manufactured from 4-amino-2,5-dialkoxypyrimidines in an improved process in which the generation of gaseous by-products is controlled by the continuous addition of hydroxylamine as a free base.
Bibliography:Application Number: EP20130837313