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公开(公告)号:US06300511B1
公开(公告)日:2001-10-09
申请号:US09463030
申请日:2000-03-27
IPC分类号: C07F902
CPC分类号: C07C315/04 , C07B39/00 , C07C67/307 , C07C201/12 , C07C231/12 , C07C253/30 , C07F9/4006 , C07C69/716 , C07C69/63 , C07C317/24 , C07C255/19 , C07C235/80 , C07C205/51
摘要: The present invention provides a method of substituting a carbonyl compound with fluorine at the &agr;-position, comprising reaching the carbonyl compound with a fluorinating present of a metal-containing catalyst. The reaction results in replacement of a hydrogen atom by fluorine. The catalyst, which is used in a catalytically effective amount, is preferably a transition metal. In one class of methods the catalyst is a transition metal compound. In another class of methods, the catalyst is an elemental metal, in which case the carbonyl compound has an activating group attached to the carbon atom which is substituted by fluorine.
摘要翻译: 本发明提供了在α-位置用氟取代羰基化合物的方法,包括用含金属的催化剂的氟化存在物到达羰基化合物。 该反应导致用氟代替氢原子。 以催化有效量使用的催化剂优选为过渡金属。 在一类方法中,催化剂是过渡金属化合物。 在另一类方法中,催化剂是元素金属,在这种情况下,羰基化合物具有与被氟取代的碳原子连接的活化基团。
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公开(公告)号:US5734073A
公开(公告)日:1998-03-31
申请号:US617933
申请日:1996-04-18
申请人: Richard Dickinson Chambers , Christopher John Skinner , Malcolm John Atherton , John Stewart Moilliet
发明人: Richard Dickinson Chambers , Christopher John Skinner , Malcolm John Atherton , John Stewart Moilliet
IPC分类号: C07B39/00 , C07C17/12 , C07C25/02 , C07C45/63 , C07C49/813 , C07C51/363 , C07C63/70 , C07C201/12 , C07C205/12 , C07C253/30 , C07C255/50 , C07C255/10 , C07C17/156 , C07C25/13
CPC分类号: C07C253/30 , C07B39/00 , C07C17/12 , C07C201/12 , C07C45/63 , C07C51/363
摘要: A method of halogenating an aromatic compound which comprises the steps of reacting an halogenating agent with the aromatic compound in the presence of fluorine and an acid, wherein the halogenating agent is at least one of an iodinating agent, a brominating agent and an chlorinating agent.
摘要翻译: PCT No.PCT / GB95 / 01738 Sec。 371日期:1996年4月18日 102(e)日期1996年4月18日PCT提交1995年7月24日PCT公布。 公开号WO96 / 03356 日期:1996年2月8日一种卤化芳族化合物的方法,包括在氟和酸存在下使卤化剂与芳族化合物反应的步骤,其中卤化剂是碘化剂,溴化剂 和氯化剂。
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公开(公告)号:US4109016A
公开(公告)日:1978-08-22
申请号:US847026
申请日:1977-10-31
CPC分类号: C07C43/123
摘要: The compound 2-chloro-1,2,2-trifluoroethyl difluoromethyl ether, processes for its manufacture, compositions containing it and its use as an inhalation anaesthetic.
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公开(公告)号:US07253303B2
公开(公告)日:2007-08-07
申请号:US10505083
申请日:2003-02-19
CPC分类号: C07C67/307 , C07C69/716
摘要: The invention provides a method for the preparation of a dicarbonyl compound of formula (I) R1COCFR2COR3 wherein R1 is selected from alkyl, substituted alkyl, cycloalkyl, aryl, substituted aryl and acetoxy, R2 is selected from hydrogen, halogen, nitro, cyano, alkyl, substituted alkyl, cycloalkyl, acetoxy, aryl and substituted aryl, and R3 is selected from alkyl, substitued alkyl, oxyalkyl and substituted oxyalkyl, the method comprising treating a dicarbonyl compound of formula (II) R1COCHR2COR3 with elemental fluorine in a solvent which consists of methanol or aqueous methanol. The method provides an inexpensive and convenient synthetic route to 2-fluoro- and 2,2-difluoro-1,3-diketones and -1,3-ketoesters.
摘要翻译: 本发明提供一种制备式(I)的二羰基化合物的方法,其中R 1,R 2,R c, 选自烷基,取代的烷基,环烷基,芳基,取代的芳基和乙酰氧基,R 2选自氢,卤素,硝基,氰基,烷基,取代的烷基,环烷基,乙酰氧基, 芳基和取代的芳基,R 3选自烷基,取代的烷基,烷氧基和取代的烷氧基,该方法包括处理式(II)的二羰基化合物R 1 COCHR 在由甲醇或甲醇水溶液组成的溶剂中,使用元素氟。 该方法为2-氟-2,2-二氟-1,3-二酮和-1,3-酮酯提供了便宜且方便的合成途径。
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公开(公告)号:US4080389A
公开(公告)日:1978-03-21
申请号:US637680
申请日:1975-12-04
CPC分类号: C07C43/123 , Y10S514/816
摘要: The compound 2-chloro-1,2,2-trifluoroethyl difluoromethyl ether, processes for its manufacture, compositions containing it and its use as an inhalation anaesthetic.
摘要翻译: 化合物2-氯-1,2,2-三氟乙基二氟甲基醚,其制备方法,含有它的组合物及其作为吸入麻醉剂的用途。
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