Highly chemoselective hydrogenation method using novel finely dispersed palladium catalyst on silk-fibroin: its preparation and activity
作者:Takashi Ikawa、Hironao Sajiki、Kosaku Hirota
DOI:10.1016/j.tet.2004.11.080
日期:2005.2
as a reductant at room temperature to be the Pd(0) complex. Pd/Fib catalyzed chemoselective hydrogenation of acetylenes, olefins and azides in the presence of aromatic ketones and aldehydes, halides, N-Cbz protective groups and benzyl esters which are readily hydrogenated using Pd/C or Pd/C(en) as a catalyst.
通过将丝素蛋白浸入Pd(OAc)2的MeOH溶液中2天(在Ar气氛下)至4天(在空气中),制备钯-丝蛋白复合物(Pd / Fib )。Pd(OAc)2逐渐被丝蛋白吸收,并在室温下以甲醇作为还原剂快速还原丝蛋白缀合的Pd(OAc)2,成为Pd(0)络合物。在芳族酮和醛,卤化物,N -Cbz保护基和苄基酯的存在下,Pd / Fib催化的乙炔,烯烃和叠氮化物的化学选择性加氢反应很容易使用Pd / C或Pd / C(en)作为催化剂进行氢化。