Development of a convoluted polymeric nanopalladium catalyst: α-alkylation of ketones and ring-opening alkylation of cyclic 1,3-diketones with primary alcohols
作者:Yoichi M.A. Yamada、Yasuhiro Uozumi
DOI:10.1016/j.tet.2007.05.071
日期:2007.8
A novel solid-phase catalyst of palladium nanoparticles, nano-Pd-V, was prepared from PdCl2 with main-chain viologen polymers via complexation and reduction. This insoluble nanocatalyst nano-Pd-V efficiently promoted α-alkylation of ketones with primary alcohols in the presence of Ba(OH)2·H2O under atmospheric conditions without organic solvents. The nano-Pd-V catalyst was reused without loss of catalytic
通过PdCl 2与主链紫精聚合物的络合和还原反应,制备了一种新型的钯纳米颗粒固相催化剂:Nano-Pd-V 。在不存在有机溶剂的大气条件下,在Ba(OH)2 ·H 2 O的存在下,这种不溶的纳米催化剂纳米Pd-V有效地促进了伯醇与酮的α-烷基化。纳米Pd-V催化剂可以重复使用而不会损失催化活性。纳米Pd-V催化剂还催化了环1,3-二酮与伯醇的开环烷基化反应。