| abstract |
This invention relates to a method for preparing a 3-halo-4,5-dihydro-1H-pyrazole compound of Formula I n ncomprising contacting with HX 1 a different 4,5-dihydro-1H-pyrazole compound of Formula IIn n nwherein X 1 is halogen and L, R, k and X 2 are as defined in the disclosure. This invention also discloses preparation of compounds of Formula IIIn n nwherein X 1 , R 3 , R 6 , R 7 , R 8a , R 8b and n are as defined in the disclosure. |