| 摘要 |
N-monosubstituted and N,N-disubstituted glycolamides of the general formula HO-CH2-CO-NR<1>R<2> (I> (where R<1> and R<2> have the meanings given in the description) - intermediates for certain herbicidally active compounds - can be prepared, starting from sodium chloroacetate, Cl-CH2-COONa (II), in a significantly improved process by refluxing a mixture of sodium chloroacetate (II), a tertiary amine (as catalyst) and xylene (as diluent) for several hours, isolating the resulting solid intermediate by filtering it off with suction and then reacting it with a primary or secondary amine of the formula HNR<1>R<2> (III) in the presence of a quaternary ammonium salt as catalyst, if appropriate under elevated pressure, at 100-200 DEG C.
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