A highly efficient heterogeneous aerobic alcohol oxidation catalyzed by immobilization of bipyridine copper(I) complex in MCM-41
作者:Hong Zhao、Qiurong Chen、Li Wei、Yuanyuan Jiang、Mingzhong Cai
DOI:10.1016/j.tet.2015.09.054
日期:2015.11
aerobic oxidation of primary benzylic and allylicalcohols to aldehydes was achieved under air in EtOH at 50 °C in the presence of 5 mol % of MCM-41-immobilized bipyridine copper(I) complex [MCM-41-bpy-CuI] and 5 mol % of 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) using aqueous ammonia as base, yielding a variety of aromatic and α,β-unsaturatedaldehydes in good to excellent yields. This heterogeneous
A highly efficient and reusable MCM-41-immobilized bipyridine copper(<scp>i</scp>) catalyst for the C–Se coupling of organoboronic acids with diaryl diselenides
作者:Hong Zhao、Yuanyuan Jiang、Qiurong Chen、Mingzhong Cai
DOI:10.1039/c4nj01687d
日期:——
A highlyefficient MCM-41-immobilized bipyridine copper(I) complex [MCM-41-bpy-CuI] was prepared from 4,4′-bis[3-(triethoxysilyl)propylaminomethyl]-2,2′-bipyridine via immobilization on the mesoporous material MCM-41, followed by reaction with CuI. In the presence of 5 mol% MCM-41-bpy-CuI, the cross-coupling reaction of organoboronicacids with diaryl diselenides proceeded smoothly in DMSO/H2O (2/1)
A高效MCM-41固定联吡啶铜(我)络合物[MCM-41联吡啶翠]从4,4'-双[3-(三乙氧基硅基)丙基氨基] -2,2'-联吡啶制备通过固定上介孔材料MCM-41,然后与CuI反应。在5 mol%MCM-41-bpy-CuI的存在下,有机硼酸与二芳基二硒化物的交叉偶联反应在DMSO / H 2 O(2/1)中于110°C的空气中顺利进行,得到了多种二有机基硒化物,收率好至极好。可以通过简单过滤反应溶液来回收和再循环这种多相铜催化剂,并在不降低活性的情况下,至少进行了10次连续试验。
Palladium bipyridyl complex anchored on nanosized MCM-41 as a highly efficient and recyclable catalyst for Heck reaction
作者:Fu-Yu Tsai、Chen-Lin Wu、Chung-Yuan Mou、Man-Chien Chao、Hong-Ping Lin、Shiuh-Tzung Liu
DOI:10.1016/j.tetlet.2004.08.065
日期:2004.9
Palladiumbipyridylcomplex anchored inside the channels of nanosizedMCM-41 silicas was found to be a highly efficient and recyclable catalyst for the Heck reaction with a turnover number up to 106 for each cycle.