A series of water-soluble dendritic ligands with a phosphine core was synthesized through the coupling of tris(4-hydroxyphenyl)phosphine oxide with poly(benzyl ether) dendron having tri(ethylene glycol) units, followed by reduction. By employing the corresponding water-soluble phosphine–gold(I) dendrimers as a catalyst, the hydration of alkynes proceeded smoothly. Furthermore, by membrane separation based on the nano-order size of the dendritic catalyst, the gold(I) catalyst was recycled without deactivation.
通过三(
4-羟基苯基)膦氧化物与含有三(
乙二醇)单元的聚(苄基醚)树枝状大分子的耦合反应,随后进行还原,合成了一系列具有膦核心的
水溶性树枝状
配体。利用相应的
水溶性膦-
金(I)树枝状大分子作为催化剂,实现了
炔烃的顺利
水合反应。此外,基于树枝状催化剂的纳米级尺寸进行膜分离,
金(I)催化剂在未失活的情况下得以回收利用。