Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CS873075Aexternal-prioritypatent/CS271471B2/cs
Application filed by Ciba GeigyfiledCriticalCiba Geigy
Priority to CS892629ApriorityCriticalpatent/CS272249B2/cs
Publication of CS262989A2publicationCriticalpatent/CS262989A2/cs
Publication of CS272249B2publicationCriticalpatent/CS272249B2/cs
Process for the preparation of novel oxetanones of novel intermediates which are usable in this process and of pharmaceutical compositions based on said oxetanones or based on precursors thereof
1-Aryl-6-carboxy-1,2,4-triazine-3,5 (2H, 4H)-diones - prepd. from aryl- diazonium salts through a mesoxalyl diurethane and the 6-(N-carbethoxy)-carboxamido deriv of the final prod.