Barnes & Thornburg LLP
Process for the preparation of 3-(3-chloro-1H-pyrazol-1-yl)pyridine
3-(3-Chloro-1H-pyrazol-1-yl)pyridine is prepared by cyclizing 3-hydrazinopyridine-.dihydrochloride with commercially available 3-ethoxyacrylonitrile to provide 3-(3-amino-1H-pyrazol-1-yl)pyridine, and by converting the amino group to a chloro group by a Sandmeyer reaction.
Dow AgroSciences LLC
C
C07D
inventional
Gary Xiaoyong Qiang Beth
Roth Li Yang Lorsbach