An Improved Catalyst System for the Pd-Catalyzed Fluorination of (Hetero)Aryl Triflates

作者:Lee Hong Geun; Milner Phillip J; Buchwald Stephen L*
来源:Organic Letters, 2013, 15(21): 5602-5605.
DOI:10.1021/ol402859k

摘要

The stable Pd(0) species [(1,5-cyclooctadiene)(L.Pd)(2)] (L = AdBrettPhos) has been prepared and successfully evaluated as a precatalyst for the fluorination of aryl triflates derived from biologically active and heteroaryl phenols, challenging substrates for our previously reported catalyst system. Additionally, this precatalyst activates at room temperature under neutral conditions, generates 1,5-cyclooctadiene as the only byproduct, and leads to overall cleaner reaction profiles.

  • 出版日期2013-11-1