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公开(公告)号:US5696308A
公开(公告)日:1997-12-09
申请号:US565715
申请日:1995-11-30
CPC分类号: C07C17/361 , C07C41/01 , C07C43/123
摘要: A process for the production of a hydro(halo)fluorocarbon which comprises heating an .alpha.-fluoroether in the vapor phase at elevated temperature. .alpha.-fluoroethers are obtained by reacting a non-enolisable aldehyde with hydrogen fluoride to form an intermediate and reacting the intermediate with an alcohol or a halogenating agent. Novel .alpha.-fluoroethers are also provided.
摘要翻译: 一种制备氢(卤代)碳氟化合物的方法,其包括在升高的温度下在气相中加热α-氟醚。 通过使非烯醇化的醛与氟化氢反应以形成中间体并使中间体与醇或卤化剂反应来获得α-氟醚。 还提供了新的α-氟醚。
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公开(公告)号:US5750807A
公开(公告)日:1998-05-12
申请号:US446524
申请日:1995-05-19
IPC分类号: C07C19/08 , C07B61/00 , C07C17/361 , C07C41/01 , C07C41/09 , C07C43/12 , C07C21/18 , C07C43/00
CPC分类号: C07C17/361 , C07C41/01 , C07C43/123
摘要: A process for the production of a hydro(halo)fluorocarbon which comprises heating an .alpha.-fluoroether in the vapor phase at elevated temperature. .alpha.-fluoroethers are obtained by reacting a non-enolisable aldehyde with hydrogen fluoride to form an intermediate and reacting the intermediate with an alcohol or a halogenating agent. Novel .alpha.-fluoroethers are also provided.
摘要翻译: 一种制备氢(卤代)碳氟化合物的方法,其包括在升高的温度下在气相中加热α-氟醚。 通过使非烯醇化的醛与氟化氢反应以形成中间体并使中间体与醇或卤化剂反应来获得α-氟醚。 还提供了新的α-氟醚。
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公开(公告)号:US06194621B1
公开(公告)日:2001-02-27
申请号:US08663038
申请日:1996-06-11
IPC分类号: C07C1908
CPC分类号: C07C17/361 , C07C19/08
摘要: A process for the production of difluoromethane which comprises contacting bis(fluoromethyl)ether in the liquid phase with boron trifluoride under conditions such that the molar ratio of boron trifluoride to bis(fluoromethyl) ether is at least 0.5:1.
摘要翻译: 一种制备二氟甲烷的方法,其包括在三氟化硼与双(氟甲基)醚的摩尔比为至少0.5:1的条件下使液相中的双(氟甲基)醚与三氟化硼接触。
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公开(公告)号:US5723684A
公开(公告)日:1998-03-03
申请号:US651652
申请日:1996-05-21
IPC分类号: C07C19/08 , B01J21/02 , B01J23/26 , B01J23/72 , B01J23/755 , C07B61/00 , C07C17/00 , C07C17/18 , C07C17/361 , C07C41/01 , C07C41/06 , C07C41/40 , C07C43/12
CPC分类号: C07C43/123 , C07C17/361 , C07C41/01
摘要: A composition comprising bis(fluoromethyl)ether and less than an equimolar amount of water, a process for the production of the composition comprising contacting formaldehyde with hydrogen fluoride and separating at least some of the by-product water from bis(fluoromethyl)ether, and use of the composition for the production of difluoromethane.
摘要翻译: 一种组合物,其包含双(氟甲基)醚且小于等摩尔量的水,该组合物的制备方法包括使甲醛与氟化氢接触并将至少一些副产物水从双(氟甲基)醚中分离出来,以及 使用组合物生产二氟甲烷。
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