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兰州大学110周年校庆化学学科系列学术报告第十七场——Samir Zard教授

【来源:兰州大学化学化工学院 | 发布日期:2018-10-25 】     【选择字号:
      应功能有机分子化学国家重点实验室院邀请,法国巴黎综合理工大学的 Samir Zard教授来我校进行学术交流并作学术报告,欢迎广大师生参加。
 
报 告 人:Samir Zard教授
报告题目:Reversible Reservoirs for Radicals. A Powerful Strategy for the Construction of Carbon-Carbon Bonds
报告时间:2018年11月2日(星期五)下午 16:00
报告地点:第二化学楼101学术报告厅
 
报告人简介
      Professor Zard received his doctorate under the supervision of Professor Sir Derek Barton in 1983 at the Institut de Chimie des Substances Naturelles at Gif-sur-Yvette, France. He currently holds the positions of Director of Research (Exceptional Class) in the C. N. R. S. and part-time Professor at Ecole Polytechnique. His main research concerns the study and development of new reactions and processes. In addition to a number of academic awards, Professor Zard received the Croix de Chevalier de la Légion d’Honneur in 2007.
 
报告摘要
      Radical reactions offer many of the properties desired by synthetic organic chemists, in terms of variety, mildness of conditions, and a selectivity that is often complementary to that of ionic chemistry, making many protection steps superfluous. Over the years, we have shown that xanthates and related thiocarbonylthio derivatives allow the generation of radicals under conditions where the radicals possess a considerably increased effective lifetime even in a concentrated medium. Intermolecular additions to un-activated alkenes, as well as a variety of reputedly difficult radical transformations can now be easily accomplished. No metals, heavy or otherwise, are required, and the starting materials and reagents are cheap and readily available. Complex, densely functionalized structures can be constructed in a convergent, modular fashion. In the course of our study of the scope and limitations of this chemistry, we have uncovered a few surprising transformations. In this talk, recent results and some mechanistic aspects will be presented and discussed briefly.