BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20250625T093318EDT-2173381W8V@132.216.98.100 DTSTAMP:20250625T133318Z DESCRIPTION:Abstract:\n\nChiral organoboronic esters are versatile intermed iates for chemical synthesis. Not only are these compounds stable under a variety of reaction conditions\, they are generally non-toxic and can be t ransformed with minimal generation of hazardous waste. An important featur e of aliphatic organoboronic esters is that the boron atom may be replaced with an array of different functional groups through efficient\, stereosp ecific transformations. This seminar will cover new strategies for the con struction of alkyl boronic esters from simple starting materials in a cata lytic enantioselective fashion. Particular attention will be placed on rec ently developed methods that operate by transition-metal-catalyzed 1\,2-me tallate rearrangements. These reactions are accomplished with a chiral Pd or Ni complex as a catalyst\, and provide a simple route to enantiomerical ly-enriched alkyl boronic esters by coupling four-coordinate boron 'ate' c omplexes with organic electrophiles. Mechanistic experiments as well as ap plications to problems in stereoselective synthesis will be addressed.\n\n Bio:\n\nJames P. Morken was born in Concord\, California and obtained his B.S. in chemistry in 1989 from UC Santa Barbara working with Prof. Bruce R ickborn. He obtained his Ph.D. from Boston College in 1995 with Prof. Amir Hoveyda and was an NSF Postdoctoral Fellow with Stuart Schreiber at Harva rd University. In 1997\, he became an Assistant Professor of Chemistry at the University of North Carolina at Chapel Hill. He was promoted to Associ ate Professor in 2002 and in 2006 joined the faculty of Boston College. In 2014\, he was named the Louise and James Vanderslice and Family Chaired P rofessor of Chemistry at Boston College.\n\nProfessor Morken's research fo cuses on the development of transition-metal-catalyzed asymmetric processe s and their use in complex molecule synthesis. He is particularly interest ed in the study and development of catalytic enantioselective reactions in volving organoboron reagents. Because of the broad array of reactions that available to organoboronates\, these types of process can be employed to address a number of compelling problems in the construction of organic fra meworks.\n DTSTART:20200107T180000Z DTEND:20200107T193000Z LOCATION:Room 10\, Maass Chemistry Building\, CA\, QC\, Montreal\, H3A 0B8\ , 801 rue Sherbrooke Ouest SUMMARY:CCVC: James Morken - Stereoselective Catalysis with Organoboron Rea gents URL:/chemistry/channels/event/ccvc-james-morken-stereo selective-catalysis-organoboron-reagents-303016 END:VEVENT END:VCALENDAR