Pd(II)-Catalyzed Cross-Coupling of sp<sup>3</sup> C−H Bonds with sp<sup>2</sup> and sp<sup>3</sup> Boronic Acids Using Air as the Oxidant
作者:Dong-Hui Wang、Masayuki Wasa、Ramesh Giri、Jin-Quan Yu
DOI:10.1021/ja801355s
日期:2008.6.1
O-Methyl hydroxamic acids, readily available from carboxylic acids, are found to be extremely reactive for P-C-H activation by Pd(OAC)(2). This reactivity is exploited to develop the first example of cross-coupling sp(3) C-H bonds with sp(3) boronic acids. Air was shown to be a suitable stoichiometric oxidant for the catalytic oxidative coupling reaction. A biologically active natural product is readily converted to its novel analogues through this coupling reaction.