Process for the preparation of derivatives of amino cetal substituu00ecdos by pyridine

摘要

Process for the preparation of derivatives of amino cetal substituu00ecdos by pyridine.The present invention relates to a process for the preparation of efficient derivatives of 1 - (piridinil) - 1,1 - dialcu00f3xi - 2 - aminoetano of formula (I),With which the compounds of formula (I) can be prepared in high purity and yield in the form of the free base without isolation of the acetilpiridina oxime of formula (XI) (XI), which is a critical product.From a security point of view as a solid.