Invention Grant
- Patent Title: Method for direct conversion of fluorocarbonyl group into halogenides
- Patent Title (中): 将氟羰基直接转化为卤化物的方法
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Application No.: US482969Application Date: 1990-02-22
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Publication No.: US5117055APublication Date: 1992-05-26
- Inventor: Takashi Abe , Eiji Hayashi , Haruhiko Fukaya
- Applicant: Takashi Abe , Eiji Hayashi , Haruhiko Fukaya
- Applicant Address: JPX Tokyo JPX Tokyo
- Assignee: Agency of Industrial Science and Technology,Ministry of International Trade & Industry
- Current Assignee: Agency of Industrial Science and Technology,Ministry of International Trade & Industry
- Current Assignee Address: JPX Tokyo JPX Tokyo
- Priority: JPX1-82726 19890331; JPX1-82727 19890331; JPX1-82728 19890331; JPX1-82729 19890331
- Main IPC: C07C51/58
- IPC: C07C51/58
Abstract:
A perfluoroalkyl halogenide represented by the formula: ##STR1## wherein X stands for one element selected from the group consisting of iodine and bromine, R.sub.f for a perfluorohydrocarbon group, n for an integer in the range of 1 to 3, and m for an integer in the range of 1 to 3, provided that n and m satisfy the relationship, n.gtoreq.m, is produced by a method which consists essentially in subjecting a perfluorocarboxylic acid fluoride represented by the formula, ##STR2## wherein R.sub.f and n have the same meanings as defined above, to a thermal reaction with a lithium halogenide represented by XI, wherein X has the same meaning as defined above.
Public/Granted literature
- US5703188A Process for removing bile salts from a patient and compositions therefor Public/Granted day:1997-12-30
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