| 摘要 |
This invention relates to a method for preparing 3-halo-4,5-dihydro-1H-pyrazole compound of Formula (I), comprising contacting with HX a different 4,5-dihydro-1H-pyrazole compound of Formula (II), wherein X is halogen and L, R, k and X are as defined in the disclosure. This invention also discloses preparation of compounds of Formula (III) wherein X, R, R, R, R, R, and n are as defined in the disclosure. |
