Post-synthetic modified MOF for Sonogashira cross-coupling and Knoevenagel condensation reactions
作者:Chizoba I. Ezugwu、Bibimaryam Mousavi、Md. Ali Asraf、Zhixiong Luo、Francis Verpoort
DOI:10.1016/j.jcat.2016.10.015
日期:2016.12
(1) which was synthesized by solvothermal reaction of 1,3-bis(4-carboxyphenyl)imidazolium chloride (H2L+Cl−) and Zn(NO3)2·6H2O. This new material, 1-Pd, was characterized by PXRD, TGA, SEM, TEM, 1H and 13C NMR, FTIR and XPS measurements. This catalyst exhibited an excellent activity for both Sonogashira cross-coupling and Knoevenagel condensation reaction retaining its catalytic and uniform distribution
通过含偶氮的金属-有机骨架(1)的后合成改性,得到了一种新的非均相NHC催化剂(1- Pd),该骨架是通过1,3-双(4-羧基苯基)咪唑氯化物( ħ 2大号+氯- )和Zn(NO 3)2 ·6H 2 O.这种新材料,1 -Pd,其特点是PXRD,TGA,SEM,TEM,1 H和1313 C NMR,FTIR和XPS测量。该催化剂在Sonogashira交叉偶联和Knoevenagel缩合反应中均表现出优异的活性,并保持其活性位点的催化和均匀分布,钯(II)固定在N杂环卡宾(NHC-Pd(II))上,至少有四个循环而不会丢失其结构完整性。