N-Heterocyclic carbene Pd(L)Cl precatalysts for cross-coupling reactions: Activation pathway and its relevance to catalytic activity

ORGN 189

Nicolas Marion, nmarion@uno.edu1, Elise C. Ecarnot1, Melanie D. Eelman, melanie.eelman@science.uottawa.ca2, Deryn E. Fogg, dfogg@science.uottawa.ca2, and Steven P. Nolan, snolan@iciq.es3. (1) Chemistry Department, University of New Orleans, 2000 Lakeshore Dr, New Orleans, LA 70148, (2) Center for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, ON K1N 6N5, Canada, (3) Nolan group, Institut of Chemical Research of Catalonia (ICIQ), Av. Països Catalans, 16, 43007 Tarragona, Spain
The syntheses and catalytic activities of two families of (NHC)Pd(L)Cl (NHC = N-heterocyclic carbene) where L = acac and L = allyl are presented. High catalytic activities have been observed for these systems, even at room temperature. This activity has been attributed to the formation of a monoligated [(NHC)Pd0] species which has been unambiguously characterized by MALDI-TOF MS. Insights into catalyst decomposition will also be presented.

 

Asymmetric Reactions and Syntheses, Metal-Mediated Reactions, Combinatorial, Parallel, and Solid-Phase Chemistry
8:00 PM-10:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster

Division of Organic Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006