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Imperial Chemical Industries Ltd
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Imperial Chemical Industries Ltd
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Application filed by Imperial Chemical Industries LtdfiledCriticalImperial Chemical Industries Ltd
Priority to ES0256101ApriorityCriticalpatent/ES256101A1/en
Publication of ES256101A1publicationCriticalpatent/ES256101A1/en
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur
(AREA)
Abstract
Process for obtaining pyrimidine derivatives, characterized in that a tautomeric form of these has the formula ** (See formula) ** wherein R1, R2 and R3, which may be the same or different, represent hydrogen or alkyl radicals, which optionally may be substituted by hydroxy, alkoxy or halogens; alkenyl or cycloalkyl radicals; R1 and R2, which may be the same or different, represent amino or mono- or di-alkylamino radicals; R1 represents a phenyl or alkylthio radical; R2 represents alkoxy radicals or halogens; R3 represents a halogen radical, or R2 and R3 can be linked together to form a polymethylene radical and the acid addition salts thereof, and by comprising reacting together a pyrimidyl hydrazine derivative of the formula ** (See formula) ** wherein R1, R2 and R3 have the indicated meanings (except when R1 and R2 represent amine or mono- or dialkyl amine radicals) or a salt thereof, with cyanogen halide. (Machine-translation by Google Translate, not legally binding)
ES0256101A1960-02-271960-02-27Procedure for obtaining pirimidine derivatives (Machine-translation by Google Translate, not legally binding)
ExpiredES256101A1
(en)
Procedure for preparing fluoracilaminotriclorometilmetano derivatives of insecticides and acaricides effects. (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of new derivatives of heterocyclic hydrazines and their salts (Machine-translation by Google Translate, not legally binding)