Photocatalytic C–X borylation of aryl halides by hierarchical SiC nanowire-supported Pd nanoparticles

作     者：Zhi-Feng Jiao Ji-Xiao Zhao Xiao-Ning Guo Xiang-Yun Guo 焦志锋;赵吉晓;郭晓宁;郭向云

作者机构：State Key Laboratory of Coal ConversionInstitute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001ShanxiChina Institut für Anorganische Chemieand Institute for Sustainable Chemistry&Catalysis with BoronJulius-Maximilians-Universit?t WürzburgAm Hubland97074 WürzburgGermany School of Petrochemical EngineeringChangzhou UniversityChangzhou 213164JiangsuChina Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2020年第41卷第2期

页      面：357-363页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foudation of China(21473232 21673271 U1710112) 

主　　题：Boronate esters Carbon-halogen activation Hierarchical SiC nanowires Pd nanoparticles Photocatalysis 

摘      要：Hierarchical Si C nanowire-supported Pd nanoparticles showed high photocatalytic activity for the C–X(X = Br, I) borylation of aryl halides at 30 °C. The Si C/Pd Mott-Schottky contact enhances the rapid transfer of the photogenerated electrons from Si C to the Pd nanoparticles. As a result, the concentrated energetic electrons in the Pd nanoparticles can facilitate the cleavage of C–I or C–Br bonds, which normally requires high-temperature thermal processes. We show that the present Pd/Si C photocatalyst is capable of catalyzing the transformation of a large variety of aryl halides to their corresponding boronate esters under visible light irradiation, with excellent yields.