The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2013
Filed:
Mar. 02, 2010
David Anthony Jackson, Münchwilen, CH;
Florian Schleth, Münchwilen, CH;
Devender Singh Negi, Muenchwilen, CH;
Werner Pfaff, Muenchwilen, CH;
David Anthony Jackson, Münchwilen, CH;
Florian Schleth, Münchwilen, CH;
Devender Singh Negi, Muenchwilen, CH;
Werner Pfaff, Muenchwilen, CH;
Syngenta Crop Protection LLC, Greensboro, NC (US);
Abstract
The present invention relates to a continuous process for producing a haloalkenone ether of the Formula (I) wherein Ris C-Chaloalkyl, Ris a C-Calkyl or phenyl, the process comprising:—(i) reacting, in a first continuous stirred tank reactor comprising a solvent, a halide of Formula (II) wherein Ris as previously defined and Ris halogen, with a vinyl ether of Formula (III) wherein Ris 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 (HR) from the intermediate compound of Formula (IV) to provide the haloalkenone ether of Formula (I).