The transesterification of dimethyl carbonate with phenol to methyl phenyl carbonate (MPC) was investigated on novel catalysts such as titanium diisopropoxide bis(ethyl acetoacetate) and titanium dibutoxide bis(ethyl acetoacetate) in a closed batch reactor at 185–206 °C under high pressure. The produced methanol could be removed efficiently by reactive distillation in order to overcome the equilibrium. The prepared catalysts have higher resistance to water than titanium alkoxides. Phenol conversion as high as 86.4 % with an MPC selectivity of 99.4 % was achieved under optimal reaction conditions within 9 h. Most of the catalytic activity was retained after repeated use for ten times.

中文翻译：

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稳定的有机钛催化剂和反应精馏用于碳酸二甲酯与苯酚的酯交换反应

在密闭间歇式反应器中，在高压下于185-206°C的高压下，研究了新型催化剂（例如二异丙氧基钛双（乙酰乙酸乙酯）和二丁氧基钛双（乙酰乙酸乙酯））上碳酸二甲酯与苯酚的酯交换反应生成碳酸甲基苯基酯（MPC）。 。可以通过反应蒸馏有效地除去产生的甲醇，以克服平衡。所制备的催化剂比钛的醇盐具有更高的耐水性。在最佳反应条件下，在9小时内，苯酚的转化率高达86.4％，MPC选择性为99.4％。重复使用十次后，大部分催化活性得以保留。