News & Events
Chemistry Special Seminar - Dr. Travis Dudding
Posted on 2018-05-25 in Events
Jun 15, 2018
Title: From Proton Sponges and NI-Centered Cations to Au(I) Catalysis
The development of a class of super basic cyclopropenimine functionalized “proton sponge” derivatives, such as DACN (1) and “Janus” sponge (2) will be presented. Notably, the strong proton affinity of these bases (PA = 23.8 - 27.0) derives in large part from the generation of aromaticity upon protonation. Going further, several derivatives, e.g., 2, fluoresce both in solution and the solid state, thus making them the first cyclopropenimine-based fluorescent organic compounds. The synthesis and use of cyclopropeniums as phase-transfer catalysts (PTCs) is another topic that will be presented. To this effect, their use in benzylation, ﬂuorination, and O-silyl ether deprotection reactions will be covered. The development of a solid, bench-stable cyclopropenimine containing strong organic Brønsted acid 3 and its use as a catalyst for intermolecular hydroamination reactions of unactivated alkenes and as an activator for Au(I)-catalyzed alkyne hydroamination will also be described. Lastly, the synthesis and application of Au(I)-precatalyst 4 in hydroamination reactions will be presented.
Chemistry Seminar - Dr. Rodney Smith
Posted on 2018-06-18
Dr. Rodney Smith of the University of Waterloo will present a seminar.
Chemistry Seminar - Dr. GianLuigi Botton
Posted on 2018-06-18
Dr. GianLuigi Botton of McMaster University will present a seminar.
Chemistry Seminar - Theerawat Prasertanan
Posted on 2018-05-10
Theerawat Prasertanan, PhD candidate, will present a seminar.
Chemistry Special Seminar
Posted on 2018-03-29
Prof. Dr. Ingo Krossing of the University of Freiburg, Germany will present a special seminar.
Chemistry Special Seminar - Dr. Raymond J. Andersen
Posted on 2018-03-14
Dr. Raymond J. Andersen, University of British Columbia, will present a special seminar.
Chemistry Weekly Seminar - Dr. Martin St. Maurice
Posted on 2018-02-14
Martin St. Maurice of Marquette University will present a seminar.