The first Cu-catalyzed cross-coupling of aromatic oximes and haloarenes is reported. This one-step formation of the N-O-Ar linkage gives access to a range of oxime ethers in good to moderate yields.
Thermolyses of <i>O</i>-Phenyl Oxime Ethers. A New Source of Iminyl Radicals and a New Source of Aryloxyl Radicals
作者:Jessie A. Blake、Derek A. Pratt、Shuqiong Lin、John C. Walton、Peter Mulder、K. U. Ingold
DOI:10.1021/jo049927y
日期:2004.4.1
dissociation enthalpies, BDEs, and represent the first thermochemical data for any reaction yielding iminyl radicals. The small range in k (N−O homolyses) is consistent with the known σ structure of these radicals, and the variations in k and N−O BDEs with changes in RR‘ are rationalized in terms of iminyl radical stabilization by hyperconjugation: RR‘CN• ↔ R•R‘C⋮N. Calculated N−H BDEs in the corresponding RR‘CNH