The present invention relates to a process for producing a diaryl oxalate, characterized in that an alkylaryl oxalate is subjected to a disproportionation reaction in the presence of a disproportionation catalyst, thereby to produce a diaryl oxalate while removing a by-product comprising a dialkyl oxalate.
The production process of the present invention is advantageous in that the kinds of the by-products are fewer than that in conventional production process for diaryl oxalate, and thus can be practically utilized in industry, and the diaryl oxalates such as diphenyl oxalate, produced by the production process of the present invention are very important industrial materials for producing chemical products such as carbamates.
本发明涉及一种
草酸二芳基酯的生产工艺,其特征在于在歧化催化剂存在下,对
草酸烷基芳基酯进行歧化反应,从而生产
草酸二芳基酯,同时除去由
草酸二烷基酯组成的副产品。
本发明生产工艺的优点在于副产品的种类比传统
草酸二芳基酯生产工艺少,因此可在工业中实际利用,而且本发明生产工艺生产的
草酸二芳基酯,如
草酸二苯酯,是生产
氨基甲酸酯等化工产品的非常重要的工业原料。