YANG QIANG,LORSBACH BETH,LI XIAOYONG,ROTH GARY,PODHOREZ DAVID E
申请号：
IN201717000985
公开号：
IN201717000985A
申请日:
2017.01.10
申请国别(地区):
IN
年份:
2017
代理人:
摘要：
3-(3-Chloro-lZ/-pyrazol-l-yl)pyridine is prepared by cyclizing S-hydrazinopyridine-dihydrochloride with acrylonitrile to provide l- (pyridin-3-yl)-4,5-dihydro-li/-pyrazol-3-amine, by oxidizing to provide 3-(3-amino-li/-pyrazol-l-yl)pyridine, and by converting the amino group to a chloro group by a Sandmeyer reaction.
