In the new reaction system, product can easily isolate and catalyst can be recycled owing to the phase transfer catalysis character of catalyst in reaction process.
在此新反应体系中，催化剂呈现反应过程相转移催化特性，产物易分离，催化剂可回收循环利用。
Sulfadiazine-polylactide, a tumor targeting drug carrier, was successfully synthesized by the phase transfer catalysis(PTC)with tetrabutyl ammonium chloride hydroxide as catalyst.
采用相转移催化法以四丁基氯化铵为催化剂合成了端基含磺胺嘧啶的聚乳酸，将肿瘤导向基团引入了可生物降解药物载体。
The mechanism of the reaction and that of phase transfer catalysis were studied. The process parameters were selected by optimum experiment.
对反应合成、相转移催化机理和合成工艺进行了研究和实验探索，经条件优化实验确定了较佳的合成工艺参数。
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