Method of preparing esters of aryloxyphenoxy propanoic acid

Details Method of preparing esters of aryloxyphenoxy propanoic acid Method of preparing esters of aryloxyphenoxy propanoic acid

C - Chemistry, Metallurgy

07

C

260/297, 260/476

C07C 69/736 (2006.01) C07D 213/63 (2006.01) C07D 213/643 (2006.01)

Patent

CA 1217192

ABSTRACT An improved method of preparing aryloxyphenoxy propanoic acid esters is disclosed. Low water levels and low temperatures increase the yield and decrease by-product formation. A hindered non-nucleophilic phenol, which is converted in situ to the phenate form, is added to the reaction mixture to drive the reaction to 99+% conversion.

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