H5PW10V2O40@VOx/SBA-15-NH2 catalyst for the solventless synthesis of 3-substituted indoles
作者:Narges Mahdizadeh Ghohe、Reza Tayebee、Mostafa M. Amini、Amin Osatiashtiani、Mark A. Isaacs、Adam F. Lee
DOI:10.1016/j.tet.2017.08.030
日期:2017.10
mesoporous SBA-15 frameworks by transition metal oxides offers a flexible route to fabricate new heterogeneous catalysts. Here, an inorganic-organic hybrid nanoporous catalyst H5PW10V2O40@VOx/SBA-15-NH2, was prepared and utilized as an efficient, eco-friendly, and recyclable catalyst for the one-pot, multi-component synthesis of 3-substituted indoles by indole substitution with aldehydes and malononitrile under
过渡金属氧化物对中孔SBA-15骨架的功能化为制备新型多相催化剂提供了一条灵活的途径。在此,制备了无机-有机杂化纳米多孔催化剂H 5 PW 10 V 2 O 40 @VO x / SBA-15-NH 2,并将其用作一种高效,环保且可回收的一锅多用催化剂。无溶剂条件下,用醛和丙二腈进行吲哚取代,合成3-取代的吲哚。通过将H 5 PW 10 V 2 O 40非共价连接至3 wt%VO x制备催化剂/ SBA-15纳米孔载体通过3-(三乙氧基甲硅烷基)丙胺连接基。VO x / SBA-15通过一锅法水热合成法,由TEOS和钒(V)氧化三叔丁醇[VO(O- t Bu)3 ]制备。通过体积和表面分析,包括N 2孔隙率法,FE-SEM,XRD,XPS,FT-IR,TGA-DTA,UV对所得的H 5 PW 10 V 2 O 40 @VO x / SBA-15-NH 2材料进行表征。–Vis和ICP-OE