Title:
【発明の名称】2,3,5,6‐テトラクロロピリジン及び2,3,6‐トリクロロピリジンの製造法
Document Type and Number:
Japanese Patent JP2588268
Kind Code:
B2
Abstract:
Vapor phase chlorination of 2,6-dichloropyridine produces 2,3,6-trichloropyridine selectively over isomeric 2,4,6-trichloropyridine and of 2,3,6-trichloropyridine produces 2,3,5,6-tetrachloropyridine in high selectivity over isomeric 2,3,4,6-tetrachloroyridine at temperatures of 300 DEG C to 450 DEG C. The products are intermediates for insecticides and herbicides.
Inventors:
This Jardine, Michael A.
Kindorf, Todd Yee.
Kindorf, Todd Yee.
Application Number:
JP50460388A
Publication Date:
March 05, 1997
Filing Date:
May 12, 1988
Export Citation:
Assignee:
The Dow Chemical Company
International Classes:
C07D213/61; (IPC1-7): C07D213/61
Domestic Patent References:
| JP6280841A | ||||
| JP6310763A |
Attorney, Agent or Firm:
Aoki Akira (3 outside)