| 摘要 |
1. Process for the preparation of alpha-acetoxy-alpha-methyl-N,N'-diacetylmalonamide in which, in a first stage, a compound chosen from among hydrocyanic acid and cyanides is reacted with acetic anhydride and, in a second stage, the mixture thus obtained is treated with acetic acid in the presence of an acid catalyst, characterised in that the first stage is carried out in the presence of a catalyst based on anion resins, the functional groups of which are chosen from among quaternary ammonium groups and tertiary amine groups. |
