| 摘要 |
A process for preparation of a palladium complex compound, useful as a catalyst in the production of aromatic isocyanates from aromatic nitro compounds and carbon monoxide in a single step, which comprises reacting (A) metallic palladium, (B) a nitrogen-containing heteroaromatic compound, (C) a halogen compound selected from the group consisting of hydrogen halides and halides of the elements belonging to any of Groups III, IV, V and VI in the periodic table and (D) an oxygen-containing oxidizing agent. |
