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SUMMARY:Catalyst Design with Aromatic Ions
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20192201T000000
UID:2026-04-28-12-41-16@natsci.colostate.edu
DTSTAMP:20260428T124116
Description:About the Seminar\n\nOur group is interested in exploring the u
 se of unique structures in catalysis. A particular focus has been the desi
 gn of catalyst platforms using aromatic ions such as cyclopropenium cation
  and cyclopentadienyl anion. With this program\, we are seeking to develop
  broadly applicable paradigms for substrate activation that capitalize on 
 the unique reactivity of these ionic aromatic motifs. This lecture will fo
 cus on our development of catalyst based on pentacarboxycyclopentadienes (
 PCCPs) and the advent of electrophotocatalysis using trisaminocyclopropeni
 um (TAC) ion catalysts.\n\nAbout the Speaker\n\nTristan was born in Madiso
 n\, WI\, in 1976 and grew up in the small town of Black Earth. He graduate
 d from the University of Wisconsin at Platteville in 1998 with a B.S. in c
 hemistry. The same year he began graduate studies at UC-Berkeley as one of
  Dave MacMillan’s first students. In 2000\, Tristan moved with the MacMi
 llan group to Caltech where he earned his Ph.D. for the development and ap
 plication of novel Claisen rearrangements. In 2004\, he began postdoctoral
  studies with Sam Danishefsky at the Memorial Sloan-Kettering Cancer Cente
 r in New York. At Sloan-Kettering he completed a total synthesis of UCS102
 5A\, a putative telomerase inhibitor. In 2006\, Tristan accepted a faculty
  position in the Department of Chemistry at Columbia University. In 2011 h
 e was promoted to Associate Professor and in 2016 to Full Professor. In Ja
 nuary 2018\, he moved to the Department of Chemistry and Chemical Biology 
 at Cornell University. 4:00 pm
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