YANG, QIANG,LORSBACH, BETH,LI, XIAOYONG,ROTH, GARY,PODHOREZ, DAVID E.
申请号：
CA2954631
公开号：
CA2954631A1
申请日:
2014.10.17
申请国别(地区):
CA
年份:
2016
代理人:
摘要：
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.
