公开(公告)号：US20200347028A1

公开(公告)日：2020-11-05

申请号：US16961949

申请日：2019-01-14

Applicant: BASF SE

Inventor： Bernd Mueller ,  Michael Rack ,  Michael Seet ,  Sascha Hahn

IPC: C07D401/04 ,  C07D213/61

Abstract: The present invention relates to a process for the preparation of pyridine derivatives of the formula (I) comprising two steps, namely, a selective chlorination followed by a selective fluorination.

公开(公告)号：US11591312B2

公开(公告)日：2023-02-28

申请号：US16961949

申请日：2019-01-14

Applicant: BASF SE

Inventor： Bernd Mueller ,  Michael Rack ,  Michael Seet ,  Sascha Hahn

IPC: C07D401/04 ,  C07D213/61

Abstract: The present invention relates to a process for the preparation of pyridine derivatives of the formula (I) comprising two steps, namely, a selective chlorination followed by a selective fluorination.