TiO<sub>2</sub>@UiO-68-CIL: A Metal–Organic-Framework-Based Bifunctional Composite Catalyst for a One-Pot Sequential Asymmetric Morita–Baylis–Hillman Reaction
作者:Yu-Hong Hu、Cong-Xue Liu、Jian-Cheng Wang、Xiu-Hui Ren、Xuan Kan、Yu-Bin Dong
DOI:10.1021/acs.inorgchem.8b02132
日期:2019.4.15
TiO2@UiO-68-CIL (2) was prepared by impregnating 1 in a toluene solution of Ti(OPri)4 and sequential in situ hydrolysis. The obtained 2 can be a bifunctional asymmetric heterogeneous catalyst to successfully promote the one-pot Morita–Baylis–Hillman reaction starting from aromatic alcohols in a tandem way.
通过新型预改性手性化合物的组合成功制备了由1-吡咯烷-2--2-咪唑修饰的手性UiO-68型金属有机骨架UiO-68-CIL(1)的手性离子液体(CIL)部分。CIL配体(H 2 L-CIL)和ZrCl 4通过溶剂热法。在TiO 2 -loaded的TiO 2 @ UIO-68-CIL(2)通过浸渍制备1中的Ti的甲苯溶液(OPR我)4和顺序原位水解。获得2 可以是双功能不对称多相催化剂,可以成功地从芳香族醇开始串联促进一锅森田-贝利斯-希尔曼反应。