Novel substituted dihydro 3-halo-1H-pyrazole-T-carboxylates, their preparation and use
申请人:Freudenberger Herbert John
公开号:US20050245580A1
公开(公告)日:2005-11-03
This invention relates to a compound of Formula I, a method for its preparation and its use in the preparation of a compound of Formula II
wherein R
1
, R
2
, R
3
, X and n are as defined in the disclosure.
This invention also discloses preparation of compounds of Formula III
wherein R
1
, R
2
, R
6
, R
7
, R
8
and n are as defined in the disclosure.
Also disclosed are certain intermediates of Formula 4 for the preparation of compounds of Formula I
wherein X is N and R
2
, R
3
and n are as defined in the disclosure.
本发明涉及一种式 I 的化合物、其制备方法及其在制备式 II 的化合物中的用途
其中 R
1
, R
2
, R
3
X 和 n 的定义与本发明相同。
本发明还公开了式 III 化合物的制备方法
其中 R
1
, R
2
, R
6
, R
7
, R
8
和 n 的定义。
还公开了用于制备式 I 化合物的某些式 4 中间体
其中 X 是 N 和 R
2
, R
3
和 n 如公开内容中所定义。