Xia Liang, Peng Tao, Wang Gang, Wen Xiaoxue, Zhang Shouguo, Wang Lin
Beijing University of Technology College of Life Science and Bio-engineering Department Beijing 100124 P. R. China.
Beijing Institute of Radiation Medicine Beijing 100850 P. R. China.
ChemistryOpen. 2019 Jan 15;8(1):45-48. doi: 10.1002/open.201800188. eCollection 2019 Jan.
Three new types of heterogeneous catalysts were prepared using a facile approach by the immobilization of Grubbs catalysts on PEGylated Merrifield resin. One of the immobilized catalysts was more efficient than the free catalyst for the metathesis of leaf alcohols in conversion and selectivity and was reused repeatedly (up to 5 cycles) with only a slight loss of activity (10.5 %). The long-chain PEGylated linker provided an appropriate distance between the resin and the catalytic center so that the ruthenium catalysts acted as the free catalyst.
通过将格拉布催化剂固定在聚乙二醇化的 Merrifield 树脂上，采用简便方法制备了三种新型多相催化剂。其中一种固定化催化剂在叶醇复分解反应的转化率和选择性方面比游离催化剂更高效，并且可以重复使用多次（多达 5 个循环），活性仅略有损失（10.5%）。长链聚乙二醇化连接体在树脂和催化中心之间提供了合适的距离，使得钌催化剂能够像游离催化剂一样发挥作用。
