- Patent Title: Process for the preparation of 3-(3-chloro-1H-pyrazol-1-yl)pyridine
-
Application No.: US14848867Application Date: 2015-09-09
-
Publication No.: US09611247B2Publication Date: 2017-04-04
- Inventor: Qiang Yang , Beth Lorsbach , Xiaoyong Li , Gary Roth , David E. Podhorez
- Applicant: Dow AgroSciences LLC
- Applicant Address: US IN Indianapolis
- Assignee: Dow AgroSciences LLC
- Current Assignee: Dow AgroSciences LLC
- Current Assignee Address: US IN Indianapolis
- Agency: Barnes & Thornburg LLP
- Agent Carl D. Corvin
- Main IPC: C07D231/14
- IPC: C07D231/14 ; C07D401/04 ; C07D403/04
Abstract:
3-(3-Chloro-1H-pyrazol-1-yl)pyridine is prepared by cyclizing 3-hydrazinopyridine-·dihydrochloride with acrylonitrile to provide 1-(pyridin-3-yl)-4,5-dihydro-1H-pyrazol-3-amine, by oxidizing to provide 3-(3-amino-1H-pyrazol-1-yl)pyridine, and by converting the amino group to a chloro group by a Sandmeyer reaction.
Public/Granted literature
- US20160031850A1 PROCESS FOR THE PREPARATION OF 3-(3-CHLORO-1H-PYRAZOL-1-YL)PYRIDINE Public/Granted day:2016-02-04
Information query
