The synthesis of non-isocyanate polyurethanes (NIPUs) has recently gained great attention. In this respect, a bifunctional catalyst and an abundant metal catalyst system were investigated for the conversion of polyfunctional epoxides to gain general access to the corresponding cyclic carbonates as monomers for NIPU synthesis. A Ca-based catalytic system and a bifunctional ammonium salt were established for the synthesis of these monomers. In total, 14 terminal polyfunctional epoxides were converted to the corresponding carbonates in yields up to 99% and high purities. With regard to the one-pot synthesis of NIPUs directly from epoxides and CO₂, the influence of the catalyst systems was evaluated. In general, both catalytic systems allowed the synthesis of NIPUs in a sequential one-pot procedure yielding polymers with a molecular mass of up to 19 kg·mol^–1.

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碳酸氢盐合成的催化体系及其对非异氰酸酯聚氨酯顺序制备的影响

非异氰酸酯聚氨酯（NIPU）的合成近来引起了极大的关注。在这方面，研究了双官能催化剂和丰富的金属催化剂体系，用于多官能环氧化物的转化，以普遍获得相应的环状碳酸酯作为NIPU合成的单体。建立了基于Ca的催化系统和双功能铵盐来合成这些单体。总共将14种末端多官能环氧化合物转化为相应的碳酸盐，收率高达99％，纯度高。关于直接由环氧化物和CO ₂一锅合成NIPU，评估了催化剂体系的影响。通常，两种催化系统都允许按顺序一锅法合成NIPU，从而产生分子量高达19 kg·mol ^–1的聚合物。