Invention Grant
US08729287B2 Method for producing 6-chlorodibenzo[d,f] [1,3,2]-dioxaphosphepin
有权
6-氯二苯并[d，f] [1,3,2] - 二氧杂磷杂环戊烯的制备方法
![Method for producing 6-chlorodibenzo[d,f] [1,3,2]-dioxaphosphepin](/docs/US/2014-05-20/US08729287B2/abs.jpg.600x600.jpg)
- Patent Title: Method for producing 6-chlorodibenzo[d,f] [1,3,2]-dioxaphosphepin
- Patent Title (中): 6-氯二苯并[d，f] [1,3,2] - 二氧杂磷杂环戊烯的制备方法
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Application No.: US13127184Application Date: 2009-10-09
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Publication No.: US08729287B2Publication Date: 2014-05-20
- Inventor: Dirk Fridag , Robert Franke , Bernhard Schemmer , Burkard Kreidler , Bjoern Wechsler
- Applicant: Dirk Fridag , Robert Franke , Bernhard Schemmer , Burkard Kreidler , Bjoern Wechsler
- Applicant Address: DE Marl
- Assignee: Evonik Oxeno GmbH
- Current Assignee: Evonik Oxeno GmbH
- Current Assignee Address: DE Marl
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102008043584 20081107
- International Application: PCT/EP2009/063150 WO 20091009
- International Announcement: WO2010/052091 WO 20100514
- Main IPC: C07F9/14
- IPC: C07F9/14
![Method for producing 6-chlorodibenzo[d,f] [1,3,2]-dioxaphosphepin](/abs-image/US/2014/05/20/US08729287B2/abs.jpg.150x150.jpg)
Abstract:
The invention relates to a method for producing 6-chlorodibenzo[d,f][1,3,2]dioxaphosphepin (formula 1), comprising the following steps: a) addition of 2,2′-dihydroxybiphenyl, which is suspended in an inert solvant. into a reactor to an excess of phosphorous trichloride under inert gas and stirring; b) discharge and neutralization of the resulting gases from the reaction mixture; c) separation of the excess phosphorous trichloride and the solvant; d) obtention of 6-chlorodibenzo[d,f][1,3,2]dioxaphosphepin.
Public/Granted literature
- US20110207966A1 METHOD FOR PRODUCING 6-CHLORODIBENZO[D,F] [1,3,2]-DIOXAPHOSPHEPIN Public/Granted day:2011-08-25
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