Efficient Synthesis of Cyclic Carbonates from Unsaturated Acids and Carbon Dioxide and their Application in the Synthesis of Biobased Polyurethanes
作者:Javier Martínez、Felipe Cruz‐Martínez、Marc Martínez de Sarasa Buchaca、Juan Fernández‐Baeza、Luis F. Sánchez‐Barba、Michael North、José A. Castro‐Osma、Agustín Lara‐Sánchez
DOI:10.1002/cplu.202100079
日期:2021.3
Bio‐derived furan‐ and diacid‐derived cyclic carbonates have been synthesized in high yields from terminal epoxides and CO2. Furthermore, four highly substituted terpene‐derived cyclic carbonates were isolated in good yields with excellent diastereoselectivity in some cases. Eleven new cyclic carbonates derived from 10‐undecenoic acid under mild reaction conditions were prepared, providing the corresponding
生物衍生的呋喃和二酸衍生的环状碳酸酯已经由末端环氧化物和 CO 2以高产率合成。此外,在某些情况下,以良好的收率和出色的非对映选择性分离了四种高度取代的萜烯衍生环状碳酸酯。在温和的反应条件下,由 10-十一碳烯酸衍生制备了 11 种新的环状碳酸酯,以优异的收率提供了相应的碳酸酯产品。该催化剂体系还在相对温和的反应条件(80°C,20 bar,24 小时)下将环氧化脂肪酸正戊酯转化为环状碳酸酯。这种双(环状碳酸酯)以高产率和不同的顺式/反式获得比例取决于所用的助催化剂。当双(三苯基膦)亚胺氯化物用作助催化剂时,仅观察到烯丙醇副产物作为次要产物。最后,使用两种环状碳酸酯作为结构单元,通过与 1,4-二氨基丁烷反应制备非异氰酸酯聚(羟基)氨基甲酸酯。