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One-pot modular synthesis of functionalized RAFT agents derived from a single thiolactone precursor

机译:源自单一硫代内酯前体的官能化RaFT试剂的一锅模块合成

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摘要

In this paper, the straightforward preparation of a range of functionalized trithiocarbonates as RAFT chain transfer agents (CTAs) is presented. The crucial step in the one-pot, three-step reaction sequence is the aminolysis of a thiolactone precursor as it introduces the desired functional handle (double bond, hydroxyl, furan, protected amine, ... ) and generates the corresponding thiol in situ, facilitating further elaboration of the CTA. Furthermore, the newly synthesized trithiocarbonates were positively evaluated as mediators in the RAFT polymerization of styrene, isobornyl acrylate, and N-isopropylacrylamide, while the presence of the end groups in the heterotelechic polymers was confirmed by NMR and UV-vis analysis.
机译:在本文中,介绍了直接制备一系列功能化的三硫代碳酸酯作为RAFT链转移剂(CTA)的方法。一锅,三步反应序列中的关键步骤是硫代内酯前体的氨解,因为它引入了所需的功能键(双键,羟基,呋喃,受保护的胺等),并在原位生成相应的硫醇,有助于进一步完善CTA。此外,对新合成的三硫代碳酸酯作为苯乙烯,丙烯酸异冰片酯和N-异丙基丙烯酰胺的RAFT聚合反应的介体进行了积极评估,同时通过NMR和UV-vis分析证实了杂相聚合物中端基的存在。

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