Iridium complexes of CCC-pincer bis-N-heterocyclic carbenes, including a newly synthesized trifluoromethyl-substituted complex, were examined as catalysts for the acceptorless dehydrogenation of cyclooctane and n-undecane. Up to 103 turnovers were observed for cyclooctane, and up to 97 turnovers were observed for n-undecane. The catalysts showed high initial turnover frequencies, followed by a gradual loss of activity over 24 hours. Experiments indicate that this loss of activity is due to catalyst decomposition rather than product inhibition.

Iridium-catalyzed acceptorless dehydrogenation of alkanes

247th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.