PROCESS FOR THE PREPARATION OF 2-PIPERAZINOPYRIMIDINE DERIVATIVES

摘要

IN THE CANADIAN PATENT AND TRADE MARKS OFFICE PATENT APPLICATION entitled : PROCESS-FOR THE PREPARATION OF 2-PIPERAZINO- PYRIMIDINE DERIVATIVES. In the names of : Paolo CARMINATI Katleen BIZIERE Henri DEMARNE assignee : Societe anonyme styled : SANOFI 40, Avenue George V 75008 PARIS Process for the preparation of 2-piperazinopyrimidine derivatives of formula < IMG > wherein R1 represents hydrogen or a hydroxy group and R2 represents hydrogen or an alkyl group containing between 1 and 6 carbon atoms and pharmaceutically acceptable acid addition salts.