Preparation of 9-hydroxy-3-(2-hydroxyethyl)-2-methyl-4

The present invention concerns a process for preparing crystalline 3-(2-chloro-ethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one substantially free of 2-acetylbutyrolactone.

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Bibliographic Details
Main Authors Vreysen, Eduard Jozef Contantia, Van Dun, Joannes Petrus, Aelterman, Wim Albert Alex
Format Patent
LanguageEnglish
Published 25.05.2010
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Summary:The present invention concerns a process for preparing crystalline 3-(2-chloro-ethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one substantially free of 2-acetylbutyrolactone.