News & Events
Chemistry Weekly Seminar - Dr. Michel Gravel
Posted on 2017-09-01 in Events
Sep 8, 2017
Title: Organocatalysis Using N-Heterocyclic Carbenes
N-Heterocyclic carbenes (NHCs) are well known for their ability to catalytically generate nucleophilic acyl anion equivalents from aldehydes. This catalytic manifold is best exemplified by the benzoin and Stetter reactions generating a-hydroxyketones and 1,4-dicarbonyl products, respectively. However, some of the most synthetically useful substrate combinations are not currently amenable to reactions in high chemo- or enantioselectivity. For instance, the use of two distinct aldehydes in the cross-benzoin reaction or of simple unsaturated ketones in the intermolecular Stetter reaction do not generally provide products in high yield and/or enantiomeric ratio. We have recently made some headway in addressing both of these challenges through the use of triazolium, oxazolium, and bis(dialkylamino)cyclopropenium salts. Our progress in improving the scope as well as the chemo- and stereoselectivity of these classical reactions will be presented.
Date: Friday, September 8, 2017
Time: 4:00 p.m.
Location: Thorvaldson 105
Chemistry Seminar - Dr. Sanjai Kumar Pathak
Posted on 2019-06-14
Dr. Sanjai Kumar Pathak, Queens College and Graduate Center of CUNY, New York will present a special seminar.
Chemistry Special Seminar - Dr. Claude Spino
Posted on 2019-05-21
Dr. Claude Spino, Universite de Sherbrooke, will present a special seminar at 11:00 a.m. in Thorvaldson 159.
Chemistry Weekly Seminar - PhD Candidate Vankata Garapati
Posted on 2019-04-18
Venkata Garapati, PhD Candidate, will present a seminar at 10:30 a.m. in Thorvaldson 159.
Chemistry Weekly Seminar - Dr. Rob Britton
Posted on 2019-03-14
Dr. Robert Britton, Department of Chemistry, Simon Fraser University, will present a seminar at 4:00 pm in Thorvaldson 110.
Special Seminar - Dr. Darren Derksen
Posted on 2019-03-06
Dr. Darren Derksen will present a Special Seminar at 11:30 am in Geology 261
Special Seminar - Dr. Amy Stevens
Posted on 2019-02-08
Dr. Amy Stevens, Department of Chemistry, will present a seminar