温度引发的环氧化物与内酯的交替共聚反应：预序列螺环原酸酯中间体
Temperature triggered alternating copolymerization of epoxides and lactones pre-sequenced spiroorthoester intermediates.
作者信息
Jung Hyuk-Joon, Goonesinghe Chatura, Mehrkhodavandi Parisa
机构信息
Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver BC V6T 1Z1 Canada
出版信息
Chem Sci. 2022 Mar 16;13(13):3713-3718. doi: 10.1039/d1sc06634j. eCollection 2022 Mar 30.
We report the alternating copolymerization of caprolactone and epoxide through the formation of pre-sequenced spiroorthoester monomer. The reaction is catalyzed by the temperature triggered, bifunctional cationic indium complex (±)-[(NNO)In(CHSiMe)][B(CF)] (1). 1 can catalyze the coupling of epoxide and lactone to form spiroorthoester at 60 °C and its double ring-opening polymerization at 110 °C to form poly(ether--ester). The post-polymerization modification and degradation of the poly(ether--ester) are further investigated.
我们报道了通过形成预序列螺环原酸酯单体实现己内酯和环氧化物的交替共聚反应。该反应由温度触发的双功能阳离子铟配合物 (±)-[(NNO)In(CHSiMe)][B(CF)] (1) 催化。1 能在 60 °C 催化环氧化物和内酯的偶联反应以形成螺环原酸酯，并在 110 °C 催化其双环开环聚合反应以形成聚（醚 - 酯）。我们还进一步研究了聚（醚 - 酯）的聚合后修饰和降解情况。
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