BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20251103T235149EST-8578nkTm0D@132.216.98.100 DTSTAMP:20251104T045149Z DESCRIPTION:Abstract:\n\nThe selective catalytic functionalization of C–H b onds of hydrocarbons remains one of the foremost challenges facing synthet ic chemists. Processes that convert C–H bonds of simple hydrocarbons into new C–C bonds are particularly important. For example\, alkyl and alkenyl arenes are currently produced on a scale of billions of pounds per year\, and the addition of aromatic C–H bonds across olefin C=C bonds\, olefin hy droarylation\, provides an atom economical reaction with broad potential i ncluding applications in both commodity scale processes as well as fine ch emical synthesis. Current industrial catalysts (e.g.\, Friedel-Crafts cata lysis or zeolites) for arene alkylation are based on acid-mediated olefin activation. New catalysts that operate by an entirely different pathway th at involves transition metal-mediated C–H activation followed by olefin in sertion into metal-aryl bonds offer new opportunities including the abilit y 1) to generate alkenyl arenes in a single step using air or air-recyclab le oxidants\, 2) to prepare 1-substituted aryl alkanes (or alkenyl precurs ors)\, 3) to alkylate or alkenylate electron-deficient arenes\, and 4) to access new regioselectivities for alkylation or alkenylation of substitute d arenes .\n\nThe Gunnoe group has been studying olefin hydroarylation (to produce alkyl aromatics) and oxidative olefin hydroarylation (to produce alkenyl aromatics) catalyzed by well-defined homogeneous catalysts based o n Ru\, Rh\, Pd and Pt. Recent efforts have extended these studies to inclu de heterogeneous variants. The goal is to combine understanding of transit ion metal mediated C–H activation and controlled olefin insertion to desig n novel catalytic routes for important classes of chemicals.\n\nIn an effo rt directed toward alkenyl arene synthesis\, catalysts based on d8 transit ion metals have been pursued. Detailed studies of Pt(II) complexes support ed by chelating bipyridyl ligands revealed a strategy for the direct forma tion of vinyl arenes\; however\, catalyst decomposition to Pt(s) is proble matic. It was hypothesized that Rh(I) complexes could be effective catalys ts. Recently\, we reported that Rh(I) catalyst convert benzene\, ethylene and Cu(II) acetate to styrene\, Cu(I) acetate\, and acetic acid with high selectivity and yields ≥ 95%. The use of Cu(II) as the oxidant allows air recycling to give over transformations that involve conversion of arene\, olefin and oxygen to form alkenyl arene and water. Turnover numbers > 10\, 000 have been demonstrated with catalyst stability up to 1 month.\n\nBio: \n\nBrent Gunnoe received his B.A. from West Virginia University in 1993\, where he was a Presidential Scholar and was awarded the Outstanding Junio r (1992) and Senior (1993) Chemistry Student. After obtaining a Ph. D. fro m the University of North Carolina (1997) under the direction of Professor Joseph Templeton and serving as a postdoctoral researcher at the Universi ty of Virginia (1997-1999) with Professor Dean Harman\, Gunnoe began his i ndependent career as an assistant professor at North Carolina State Univer sity. In 2008 he moved to the University of Virginia as Professor of Chemi stry\, and in 2017 he was appointed Commonwealth Professor. He is co-autho r of three book chapters\, four patents and more than 130 referred journal publications\, and he has delivered over 125 invited lectures. He was the recipient of a National Science Foundation CAREER Award\, the Sigma Xi Fa culty Research Award\, an Alfred P. Sloan Research Fellowship and the LeRo y and Elva Martin Award for Teaching Excellence. From 2009-2015\, Gunnoe s erved as the Director of the Center for Catalytic Hydrocarbon Functionaliz ation (CCHF)\, an Energy Frontier Research Center funded by the United Sta tes Department of Energy. In 2016 he served on the Organizing committee fo r National Academies of Sciences\, Engineering\, and Medicine's Board on C hemical Sciences and Technology 'The Changing Landscapes of Feedstocks for Chemical Production – Implications for Catalysis' and was a panelist for the Department of Energy's Basic Research Needs Workshop 'Catalysis Scienc e to Transform Energy Technologies.' Currently\, he serves as the UVA Dire ctor for the MAXNET Energy consortium and as Associate Editor for ACS Cata lysis.\n DTSTART:20200225T180000Z DTEND:20200225T193000Z LOCATION:Room 10\, Maass Chemistry Building\, CA\, QC\, Montreal\, H3A 0B8\ , 801 rue Sherbrooke Ouest SUMMARY:Chemical Society Seminar: Brent Gunnoe - Transition Metal Catalyzed Hydroarylation of Olefins: New Catalysts for Alkyl and Alkenyl Arenes URL:/chemistry/channels/event/chemical-society-seminar -brent-gunnoe-transition-metal-catalyzed-hydroarylation-olefins-new-303031 END:VEVENT END:VCALENDAR