报告时间：2017年3月13日 （星期一）9:30-10:30

报告地点：能源楼会议中心二号会议室（能源楼会议中心2楼204室）

报告人：Prof. Tamao Ishida

Tokyo Metropolitan University

报告摘要：

　　Transformation of organic compounds by supported gold nanoparticles in liquid phase has been attracting research targets owing to their unique product selectivity. Aerobic oxidation of alcohols using molecular oxygen is one of the most active area of research, and many kinds of supported goldcatalysts have been developed. However, base-free direct oxidation of alcohols to carboxylic acids andesters is still limited.

　　In this presentation, oxidation of octanol to octanoic acid will be introduced (Scheme 1). Among several supported gold catalysts, Au/NiO recorded the highest catalytic activity and selectivity to octanoic acid while Pd/NiO and Pt/NiO showed much inferior activity. Under the optimized conditions, 97% selectivity was achieved at a full conversion (Fig. 1). Aliphatic esters, such as ethyl octanoate, are also useful organic compounds for flavors and fragrance. I will also show the oxidative esterification of octanal to ethyl octanoate under base-free using both batch and flow reactors.

　　Oxidative coupling of C–H bonds to form biaryls (Scheme 2) was also performed by gold catalysts using O₂ as a sole oxidant. This reaction is generally operated by homogenous Pd(II)complexes, but heterogeneous Pd catalysts did not work well. In contrast, Au/Co₃O₄ and Au/ZrO₂catalyzed the reaction and gave more valuable compound, S-DM, selectively. Supported gold nanoparticles have appeared to be promising oxidation catalysts for synthesizing fine chemicals.

报告人简介： 

Prof. Tamao Ishida

　　1997-1999  Nippon Shokubai Co., Ltd.

　　2005-2006  Japan Science for the Promotion of Science (JSPS) Research Fellow (DC2), Kyoto University

　　2006  JSPS Research Fellow (PD), Kyoto University (Prof. Yoshiki Chujo)

　　2006-2011  Assistant Professor, Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University (Prof. Masatake Haruta)

　　2011-2014  Associate Professor, Department of Chemistry, Graduate School of Science, Kyushu University (Prof. Makoto Tokunaga)

　　2014-present  Project Professor (no educational duty), Research Center for Gold Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University (Prof. Masatake Haruta)

　　报告联系人：DNL2005  格日乐（9159）