| 摘要 |
The invention relates to a method for producing N-aryl carbamates (urethanes) and N-aryl isocyanates. According to said method, aromatic nitro compounds are subjected to a reductive carbonylation in the presence of carbon dioxide and organic compounds that bear hydroxyl groups and the carbonylation is carried out in the presence of metal complexing catalysts. Anionic N,O-chelate ligands of the general formulae [M(N˜O)−2] and [M(O˜N˜N˜O)2−], containing a divalent or trivalent transition metal of groups 5-11 are used for the catalysts.
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