Invention Grant
US5959119A Process for preparing 3,5-dimethylisoxazole-4-sulphonyl chloride
失效
制备3,5-二甲基异恶唑-4-磺酰氯的方法
- Patent Title: Process for preparing 3,5-dimethylisoxazole-4-sulphonyl chloride
- Patent Title (中): 制备3,5-二甲基异恶唑-4-磺酰氯的方法
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Application No.: US175817Application Date: 1998-10-20
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Publication No.: US5959119APublication Date: 1999-09-28
- Inventor: Bernd Gallenkamp , Lothar Rohe
- Applicant: Bernd Gallenkamp , Lothar Rohe
- Applicant Address: DEX Leverkusen
- Assignee: Bayer Aktiengesellschaft
- Current Assignee: Bayer Aktiengesellschaft
- Current Assignee Address: DEX Leverkusen
- Priority: DEX19747625 19971029
- Main IPC: C07D261/10
- IPC: C07D261/10
Abstract:
By a novel process, 3,5-dimethylisoxazole-4-sulphonyl chloride is prepared by reacting 3,5-dimethylisoxazole initially with chlorosulphonic acid and then additionally with thionyl chloride at a temperature between 60.degree. C. and 110.degree. C.
Public/Granted literature
- US5478915A Polyimide oligomers Public/Granted day:1995-12-26
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