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SUMMARY:AC Colloquium Prof. Dr. Martin Caleb - Baylor University USA
DTSTART;TZID=Europe/Berlin:20260518T160000
DTEND;TZID=Europe/Berlin:20260518T170000
DTSTAMP:20260513T060438Z
UID:f867d8275ea24050aaf34050572b2267@www.chemie.uni-bonn.de
CATEGORIES:ac-events,Lu-events
CREATED:20260309T082045Z
DESCRIPTION:Carborane Substituted Boron Lewis Superacids\nDodecacarborane 
 clusters (C2B10H12) have been known for 60 years yet their application as 
 an electron withdrawing group is not well established. Our group has been 
 preparing boranes that feature two or three ortho-carboranes as bulky elec
 tron withdrawing groups on boron to enhance the Lewis acidity. The reactiv
 ity of the new boranes is compared to the state-of-the-art boranes with fl
 uoroaryl groups revealing significantly greater Lewis acidity. The large s
 teric profile of the carboranes make it an excellent Lewis acid partner in
  frustrated Lewis pair chemistry. A compound with two carboranes and a hyd
 ride is one of the most potent hydroboration reagents known that is capabl
 e of the uncatalyzed hydroboration of cyclopropanes. The properties of the
  feature compounds\, mechanisms of the reactions\, and isolation of reacti
 ve intermediates will be discussed.
LAST-MODIFIED:20260415T070234Z
URL:https://www.chemie.uni-bonn.de/lu/de/lu-events/ac-colloquium-prof-dr-m
 artin-caleb-baylor-university-usa
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