Recently, R. Mülhaupt et al. introduced the first high yielding synthesis of erythritol bis(carbonate) from erythritol with diphenyl carbonate (DPC) as reagent. They utilized it as monomer for the synthesis of non-isocyanate polyurethanes (NIPUs). Here, we present a significantly more sustainable procedure for the carbonate formation regarding solvent, carbonyl source, reaction temperature, reaction time, reduced pressure during the reaction, simplicity of the workup as well as recycling of reagents. Catalysed by triazabicyclodecene (TBD), dimethyl carbonate as solvent as well as reagent leads to selective product formation and facile product separation by filtration. After addition of new starting materials, the mixture of catalyst and DMC was reused up to 8 times without loss of catalytic activity.

最近，R。Mülhaupt等。介绍了第一个高产率的由赤藓糖醇以碳酸二苯酯（DPC）作为试剂合成赤藓糖醇二（碳酸酯）的方法。他们将其用作合成非异氰酸酯聚氨酯（NIPU）的单体。在这里，我们提出了一种关于碳酸盐形成的更为可持续的程序，涉及溶剂，羰基来源，反应温度，反应时间，反应过程中的减压，后处理的简单性以及试剂的回收利用。在三氮杂双环癸烯（TBD）的催化下，碳酸二甲酯作为溶剂和试剂可导致选择性形成产物，并通过过滤方便地分离产物。添加新的起始原料后，催化剂和DMC的混合物可重复使用8次，而不会损失催化活性。