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

Abstract: 

The development of a class of super basic cyclopropenimine functionalized “proton sponge” derivatives, such as DACN (1) andJanus” 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.

Back to News Listing

Related Articles

Chemistry Weekly Seminar - Dr. Len Luyt

Posted on 2018-09-24

Dr. Len Luyt, of The University of Western Ontario, will present a seminar at 4:00 p.m. in Thorvaldson 271.


Chemistry Weekly Seminar - Sajna Simon

Posted on 2018-09-12

Sajna Simon, PhD Candidate, will present a seminar at 4:00 p.m. in Thorvaldson 271.


Chemistry Weekly Seminar - Dr. Holger Kleinke

Posted on 2018-09-12

Dr. Holger Kleinke, of the University of Waterloo, will present a seminar at 4:00 p.m. in Thorvaldson 271.


Chemistry Weekly Seminar - Dr. Fraser Hof

Posted on 2018-09-12

Dr. Fraser Hof, of The University of Victoria, will present a seminar at 4:00 p.m. in Thorvaldson 271.


Chemistry Weekly Seminar - Dr. Vicki Meli

Posted on 2018-09-12

Dr. Vicki Meli, of Mount Allison University, will present a seminar at 4:00 p.m. in Thorvaldson 271.


Chemistry Weekly Seminar - Dr. Joyce McBeth

Posted on 2018-09-12

Dr. Joyce McBeth, Department of Geological Sciences, will present a seminar at 4:00 p.m. in Thorvaldson 271.