Recovery of herbicidal esters

Details Recovery of herbicidal esters Recovery of herbicidal esters

C - Chemistry, Metallurgy

07

C

260/476.3

C07C 233/12 (2006.01)

Patent

CA 1106392

A B S T R A C T Process for the recovery of N-benzoyl-N-(3,4-dihalophenyl)-2- aminopropionic acid esters from mixtures by treatment with an aqueous base, followed by treatment with a water-immiscible organic solvent; acidifying the aqueous phase with a mineral acid; esterifying the liberated carboxylic acid(s) with a lower alkanol and optionally benzoylating the esterified product.

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