Invention Grant
- Patent Title: Process for the manufacture of R-(+)-2-(4-(4-cyano-2-fluorophenoxy)phenoxy)propionic acid esters
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Application No.: US13034054Application Date: 2011-02-24
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Publication No.: US09598356B2Publication Date: 2017-03-21
- Inventor: Ronald B. Leng , Eric W. Otterbacher , Herbert N. Praay
- Applicant: Ronald B. Leng , Eric W. Otterbacher , Herbert N. Praay
- Applicant Address: US IN Indianapolis
- Assignee: Dow AgroSciences LLC
- Current Assignee: Dow AgroSciences LLC
- Current Assignee Address: US IN Indianapolis
- Agent Michael R. Asam
- Main IPC: C07C69/76
- IPC: C07C69/76 ; C07C253/30
Abstract:
Cyhalofop is prepared by coupling 2-(4-hydroxyphenoxy)propionic acid and 3,4-difluorobenzonitrile with base in a polar aprotic solvent in the presence of a phase-transfer catalyst.
Public/Granted literature
- US20110152560A1 PROCESS FOR THE MANUFACTURE OF R-(+)-2-(4-(4-CYANO-2-FLUOROPHENOXY)PHENOXY)PROPIONIC ACID ESTERS Public/Granted day:2011-06-23
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