Invention Grant
- Patent Title: Chemical process for the production of haloalkenone ethers
- Patent Title (中): 用于生产卤代烯酮醚的化学方法
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Application No.: US13254795Application Date: 2010-03-02
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Publication No.: US08552222B2Publication Date: 2013-10-08
- Inventor: David Anthony Jackson , Florian Schleth , Devender Singh Negi , Werner Pfaff
- Applicant: David Anthony Jackson , Florian Schleth , Devender Singh Negi , Werner Pfaff
- Applicant Address: US NC Greensboro
- Assignee: Syngenta Crop Protection LLC
- Current Assignee: Syngenta Crop Protection LLC
- Current Assignee Address: US NC Greensboro
- Agent James Cueva
- Priority: GB0903749.0 20090304
- International Application: PCT/EP2010/001267 WO 20100302
- International Announcement: WO2010/099922 WO 20100910
- Main IPC: C07C45/63
- IPC: C07C45/63 ; C07C45/64

Abstract:
The present invention relates to a continuous process for producing a haloalkenone ether of the Formula (I) wherein R1 is C1-C6 haloalkyl, R2 is a C1-C6 alkyl or phenyl, the process comprising:—(i) reacting, in a first continuous stirred tank reactor comprising a solvent, a halide of Formula (II) wherein R1 is as previously defined and R3 is halogen, with a vinyl ether of Formula (III) wherein R2 is as previously defined, to form an intermediate compound of Formula (IV), wherein the concentration of the vinyl ether of Formula (III) in the reaction mass is 15% or less w/w; and (ii) transferring the reaction mass from the first continuous stirred tank reactor into a subsequent continuous stirred tank reactor, wherein the conditions within the subsequent reactor permit the elimination of hydrogen halide (HR3) from the intermediate compound of Formula (IV) to provide the haloalkenone ether of Formula (I).
Public/Granted literature
- US20120095265A1 CHEMICAL PROCESS FOR THE PRODUCTION OF HALOALKENONE ETHERS Public/Granted day:2012-04-19
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