| 摘要 |
PCT No. PCT/ES91/00060 Sec. 371 Date Jun. 12, 1992 Sec. 102(e) Date Jun. 12, 1992 PCT Filed Sep. 24, 1991 PCT Pub. No. WO92/05144 PCT Pub. Date Apr. 2, 1992.Procedure for obtaining acetic acid derivatives (I) where R1 and R2 are H or groups -CH2-COOH by oxidation of (II) where R and R' are H or groups of -CH2-CH2OH with O2 or a gas that contains it, in the presence of an metal hydroxide, demineralized water and Cu-Raney. The reaction is carried out keeping constant a partial pressure of oxygen below 20 Kg/cm2, inside the reactor. The acids (I) obtained as soluble salts, can be isolated and purified by chemical or electrochemical means. Examples of acids (I) are glycine, iminediacetic acid and nitricetriacetic acid, useful as nutrients and in the synthesis of herbicides. <IMAGE> (II) <IMAGE> (I)
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