Herein, the long-standing challenge of the ring-opening aminolysis of CO₂-derived tetrasubstituted cyclic carbonates at room temperature (r.T) is overcome under catalyst-free conditions. Molecular design of the cyclic carbonate by substitution of an alkyl group by a thioether unlocks quantitative conversion at r.T and ensures total regioselectivity toward highly substituted oxazolidone scaffolds. An in-depth rationalization of the high reactivity of these cyclic carbonate structures and of the aminolysis reaction mechanism is provided by a computational study supporting experimental observations. The high efficiency of the reaction is then translated to the deconstruction of high-performance thermoplastics containing tetrasubstituted cyclic carbonate linkages to deliver building blocks that are reused for designing recyclable thermosets bearing dynamic N,S-acetal linkages.

中文翻译：

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四取代环状碳酸盐的快速区域选择性氨基解及其在可回收热塑性塑料和热固性塑料中的应用


在此，在无催化剂条件下克服了 CO₂ 衍生的四取代环状碳酸酯在室温 （r.T） 下开环氨解的长期挑战。通过硫醚取代烷基来设计环状碳酸盐，从而解锁了 r.T 的定量转化，并确保了对高度取代的噁唑酮支架的总区域选择性。支持实验观察的计算研究提供了这些环状碳酸盐结构和氨解反应机制的高反应性的深入合理化。然后，将反应的高效率转化为含有四取代环状碳酸酯键的高性能热塑性塑料的解构，以提供重新用于设计具有动态 N，S-缩醛键的可回收热固性塑料。