A simple, phosphine free, reusable Pd(<scp>ii</scp>)–2,2′-dihydroxybenzophenone–SBA-15 catalyst for arylation and hydrogenation reactions of alkenes
作者:Anish Lazar、Chathakudath P. Vinod、Anand Pal Singh
DOI:10.1039/c5nj02686e
日期:——
complexation with Pd(II)Cl2 to get Pd(II)–DHBP@SBA-15. The synthesized catalysts were characterized by elemental analysis, XRD, N2 sorption analyses, TG, DTA, FT-IR, solid state 13C and 29Si NMR spectra, XPS, UV-Visible, SEM, EDAX and TEM. The synthesized catalysts were screened in arylation (Heck reactions) and hydrogenation reactions of alkenes, and the results show that Pd(II)–DHBP@SBA-15 exhibits
通过后接枝方法,开发并报道了一种高效,简单,无膦和助催化剂的C-C偶联反应非均相催化剂。共价锚定膦不含钯(II型)的2,2'-二羟基二苯酮(DHBP)络合物在有机官能化SBA-15已由之间的反应合成的氨基官能化的SBA-15(NH 2 SBA-15)和2,2'-二羟基二苯甲酮(DHBP)配体,并与Pd(II)Cl 2进一步络合,得到Pd(II)–DHBP @ SBA-15。通过元素分析,XRD,N 2吸附分析,TG,DTA,FT-IR,固态13 C和29表征了合成的催化剂Si NMR光谱,XPS,紫外可见光,SEM,EDAX和TEM。在烯烃的芳基化反应(Heck反应)和加氢反应中筛选了合成的催化剂,结果表明,Pd(II)-DHBP @ SBA-15对烯烃的芳基化和氢化反应具有很高的转化率和选择性。锚固的固体催化剂可以有效地回收利用并重复使用几次,而不会造成活性的重大损失。