[EN] INDUSTRIAL PROCESS OF MONO-ALKYLATING A PIPERIDINE NITROGEN IN PIPERIDINE DERIVATIVES WITH DEUTERATED-ALKYL<br/>[FR] PROCÉDÉ INDUSTRIEL DE MONOALKYLATION D'UN AZOTE DE PIPÉRIDINE DANS DES DÉRIVÉS DE LA PIPÉRIDINE AVEC UN ALKYLE DEUTÉRÉ
申请人:OTSUKA PHARMA CO LTD
公开号:WO2019049918A1
公开(公告)日:2019-03-14
The present invention relates to a method of mono-alkylating a piperidine nitrogen in a piperidine derivative with a deuterated lower-alkyl, which comprises protecting the piperidine nitrogen with an aralkyl protective group, lower-alkylating the piperidine nitrogen with a deuterated-lower-alkylating agent under neutral or basic condition, and then deprotecting the aralkyl protective group.