发明授权
- 专利标题： Processes for preparation of 5-pyrazolemercaptan derivatives and intermediates thereof
- 专利标题（中）： 制备5-吡唑硫醇衍生物的方法及其中间体
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申请号： US166864申请日： 1993-12-15
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公开(公告)号： US5405965A公开(公告)日： 1995-04-11
- 发明人: Jong K. Choi , In B. Jhung , Jae C. Lee , Jong S. Sa , Sung J. Jo , Jin H. Cho
- 申请人： Jong K. Choi , In B. Jhung , Jae C. Lee , Jong S. Sa , Sung J. Jo , Jin H. Cho
- 申请人地址： KRX Seoul
- 专利权人： Lucky Ltd.
- 当前专利权人： Lucky Ltd.
- 当前专利权人地址： KRX Seoul
- 优先权： KRX92-24734 19921217; KRX92-24736 19921217; KRX92-25112 19921222; KRX93-3512 19930309
- 主分类号： B01J31/02
- IPC分类号： B01J31/02 ; C07B61/00 ; C07C337/02 ; C07C337/04 ; C07D231/18
摘要：
The present invention relates to a process for preparation of 5-pyrazolemercaptan derivatives represented by the following general formula (I), which is useful for synthesis of sulfonyl-urea-based herbicides, and an intermediate thereof, ##STR1## wherein R.sup.1 represents hydrogen, C.sub.1 -C.sub.4 alkyl, allyl or propargyl,R.sup.2 represents hydrogen, C.sub.1 -C.sub.4 alkyl, or a phenyl group which can contain one or more substituent selected from the group consisting of halogen, nitro and methyl at an optional position, andR.sup.3 represents hydrogen, methyl, ethyl or phenyl.
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