(perfluoroalkyl)dibenzonium salt and intermediate for producing the same |
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| 申请号 | JP2727090 | 申请日 | 1990-02-08 | 公开(公告)号 | JPH03197479A | 公开(公告)日 | 1991-08-28 |
| 申请人 | Sagami Chem Res Center; | 发明人 | UMEMOTO TERUO; ISHIHARA SUMI; | ||||
| 摘要 | NEW MATERIAL:A compound expressed by formula I (Rf is 1-10C perfluoroalkyl; A is S or Se; R 1 and R 2 are H or nitro; X - is conjugated base of Brensted acid; (n) is 0 or 1). EXAMPLE: S-(Trifluoromethyl)dibenzothiophenium tetrafluoroborate expressed by formula II. USE: A reagent for introducing fluoroalkyl groups into carbanions. PREPARATION: A diphenyl compound expressed by formula III is made to react with a perfluoroalkyl halide expressed by the formula RfY (Y is I or Br) under alkaline conditions, as necessary, while being irradiated with light to provide a perfluoroalkyldiphenyl compound expressed by formula IV, which is then allowed to react with F 2 , Cl 2 , XH (XH is Brensted acid) or X' (X' is Lewis acid). COPYRIGHT: (C)1991,JPO&Japio |
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| 说明书全文 | |||||||
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