Onium salt, N1, N1, N1, N5, N5, N5-hexaethylpentane-1,5-diammonium dibromide, was used as a catalyst for the addition of CO2 to epoxides. An influence of insoluble supports on the rate of the process as well as possibility of recycling of the catalytic system are described. In addition, the effects of temperature and CO2 pressure on the yields of products are discussed.

中文翻译：

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二铵盐在由环氧化物和 CO2 合成有机碳酸酯中的应用：载体的促进作用

鎓盐，N1，N1，N1，N5，N5，N5-六乙基戊烷-1,5-二溴化二铵，用作将 CO2 添加到环氧化物中的催化剂。描述了不溶性载体对过程速率的影响以及催化系统循环利用的可能性。此外，还讨论了温度和 CO2 压力对产品收率的影响。