HUT42485A - Improved process for producing 2,4,7-thiamino-6-phenyl-pteridine
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Improved process for producing 2,4,7-thiamino-6-phenyl-pteridine
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Publication number
HUT42485A
HUT42485AHU316385AHU316385AHUT42485AHU T42485 AHUT42485 AHU T42485AHU 316385 AHU316385 AHU 316385AHU 316385 AHU316385 AHU 316385AHU T42485 AHUT42485 AHU T42485A
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Application filed by Gyogyszerkutato IntezetfiledCriticalGyogyszerkutato Intezet
Priority to HU316385ApriorityCriticalpatent/HU195817B/en
Publication of HUT42485ApublicationCriticalpatent/HUT42485A/en
Publication of HU195817BpublicationCriticalpatent/HU195817B/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Improved prepn. of 2,4,7-triamino- phenyl-pteridine (VII) consists of a two step reaction carried out in the same reaction mix at 50-130 deg.C in the presence of a base. Solvents used are of alcohol, alcohol-ether or amide type. The first step consists of heating iso-nitroso-malonic-dinitride (V) guanidine salt to form 2,4,6-triamino -5-nitroso-pyrimidine (IV). Benzylcyanide reacts with (IV) in the second step to obtain (VII).
HU316385A1985-08-161985-08-16Process for producing 2,4,7-thiamino-6-phenyl-pteridine
HU195817B
(en)