Poly (lactic acid) (PLA) is extensively used as an eco-friendly compound for many applications. The synthesis of stereo-pure lactide, specifically l,l-lactide which is the most desired isomer for the synthesis of high-quality PLA is very important. In this work, various materials including MOFs and simple bases have been applied as catalysts for the Lactide synthesis. Herein we report the one-step synthesis of l,l-lactide with high selectivity and yield (99%) in the absence of racemization by applying a cost-effective Cs₂CO₃ catalyst. The novel described procedure is even expected to be very efficient for industrial applications.

中文翻译：

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从l-乳酸一步合成立体纯l，l丙交酯

聚乳酸（PLA）被广泛用作许多应用中的环保化合物。立体纯的丙交酯，具体的合成升，升-丙交酯，其是最期望的异构体为高质量PLA的合成是非常重要的。在这项工作中，包括MOF和简单碱在内的各种材料已被用作丙交酯合成的催化剂。本文中，我们通过应用经济高效的Cs ₂ CO ₃催化剂，在不存在外消旋作用的情况下，一步合成了1，l-丙交酯，具有较高的选择性和收率（99％）。甚至预期所描述的新颖过程对于工业应用将是非常有效的。