Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
Ciba Geigy AG
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Filing date
Publication date
Priority claimed from CH1280970Aexternal-prioritypatent/CH538806A/en
Priority claimed from CH944371Aexternal-prioritypatent/CH561011A5/en
Application filed by Ciba Geigy AGfiledCriticalCiba Geigy AG
Publication of ES394529A1publicationCriticalpatent/ES394529A1/en
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
Procedure for the preparation of formamidines that, in the form of free base or of salts with inorganic or organic acids, constitute the active substance of antiparasitic agents, of general formula **(See formula)** in which R1 signifies methyl; R2 means C2 to C4 alkyl (or R1 signifies ethyl and R2 signifies C3 to C4 alkyl); R3 stands for halogen; R4 signifies hydrogen, halogen, C1 to C4 alkyl or C1 to C4 alkoxy; and R5 signifies C1 to C4 alkyl, characterized by reacting a compound of the formula **(See formula)** with a compound of the formula **(See formula)** in which R1 to R5 have the same meaning as before. in the presence of SOCl2, COCl, POCl3, PCl3, PCl5 (CH3) 2SO4 or (see formula). (Machine-translation by Google Translate, not legally binding)
ES394529A1970-08-271971-08-26Procedure for the preparation of formamidines. (Machine-translation by Google Translate, not legally binding)
ExpiredES394529A1
(en)
Procedure for the preparation of amino-derivatives of pirazolo (3,4-b) pyridine-5-carboxylic acids. (Machine-translation by Google Translate, not legally binding)