发明授权
- 专利标题: Sulfonic acid esters
- 专利标题(中): 磺酸酯
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申请号: US880436申请日: 1978-02-23
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公开(公告)号: US4242507A公开(公告)日: 1980-12-30
- 发明人: Masumi Itoh , Jiyoji Notani
- 申请人: Masumi Itoh , Jiyoji Notani
- 申请人地址: JPX Osaka
- 专利权人: Fujisawa Pharmaceutical Co., Ltd.
- 当前专利权人: Fujisawa Pharmaceutical Co., Ltd.
- 当前专利权人地址: JPX Osaka
- 主分类号: C07D249/18
- IPC分类号: C07D249/18 ; C07D253/08 ; C07D257/04 ; C07D277/68 ; C07K1/08 ; C07K5/06 ; C07K5/072 ; C07K5/078 ; C07K5/097
摘要:
A novel process for the amidation or esterification which comprises reacting a compound having a carboxy group with a compound having an amino or imino group which can be acylated or with a compound having a hydroxy group in the presence of a sulfonic acid ester of the formula:R.sub.1 --SO.sub.2 --OR.sub.2wherein R.sub.1 is an organic group and R.sub.2 O-- is a residue of a strongly acidic N-hydroxy compound as a condensation agent, and a novel sulfonic acid ester useful as such a condensation agent and a process for the preparation thereof.
公开/授权文献
- US4688960A Self-clinching plate fastening arrangement 公开/授权日:1987-08-25
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