Rapid microwave synthesis of Bi2WO6 for C=C bonds oxidative cleavage to ketones with visible light irradiation in aerobic micellar medium
作者:Tianxiang Liu、Fei Xue、Bin Wang、Rui Wang、Wei Cao、Xiuli Zhao、Yu Xia、Weiwei Jin、Yonghong Zhang、He Lin、Chenjiang Liu
DOI:10.1016/j.jcat.2022.11.034
日期:2023.1
ammonium bromide (CTAB) as surfactant in water, under visible light irradiation with O2 balloon. In this reaction, Bi2WO6 can be reused 7 times and maintain high catalytic activity. Both control experiments and the electron paramagnetic resonance (EPR) experiments jointly reveal that holes, electrons, and superoxide radicals play essential roles in the reaction system. Moreover, the density functional theory
通过C=C键断裂选择性合成具有药用价值的酮类化合物至关重要。然而,昂贵的试剂和苛刻的条件对于这种合成方法来说往往是必不可少的。在此,提出了一种绿色高效的方法,通过可见光促进胶束介质中烯烃C=C键的有氧氧化裂解获得酮。使用微波法制备的Bi 2 WO 6作为可回收光催化剂,十六烷基三甲基溴化铵(CTAB)作为表面活性剂在水中,在O 2气球的可见光照射下,可以发生37个例子。在该反应中,Bi 2 WO 6可重复使用7次,保持高催化活性。对照实验和电子顺磁共振(EPR)实验共同揭示了空穴、电子和超氧自由基在反应体系中起着至关重要的作用。此外,密度泛函理论(DFT)计算也被用来证实光催化氧化裂解C=C双键制备酮的可行性。