Diarylborinic acids catalyze the formation of linear polyesters from glycerol, a trifunctional, carbohydrate-based monomer. The selective activation of 1,2-diols over isolated alcohols by the organoboron catalyst results in polymers that are essentially free of branching or cross-linking and possess a high fraction of 1,3-enchained glycerol units, as assessed by ¹H and ¹³C NMR spectroscopy. The ability to generate well-defined polyester architectures from glycerol is significant in light of the numerous applications of such macromolecules, particularly in the biomedical area. Isomerization, post-polymerization functionalization and controlled cross-linking reactions of the obtained linear poly(glycerol esters) are demonstrated.

中文翻译：

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甘油与二酰氯的催化剂控制缩聚：来自三官能团单体的线性聚酯

二芳基硼酸催化从甘油（一种三官能的碳水化合物基单体）形成线型聚酯。1,2-二醇通过有机硼催化剂对分离的醇的选择性活化导致聚合物基本上没有支化或交联，并具有高比例的 1,3-连接的甘油单元，如¹ H 和¹³所评估C 核磁共振波谱。鉴于此类大分子的众多应用，特别是在生物医学领域，从甘油生成明确定义的聚酯结构的能力非常重要。证明了所得线性聚（甘油酯）的异构化、聚合后官能化和受控交联反应。