Copper-Catalyzed C-P Coupling through Decarboxylation
作者:Jie Hu、Ning Zhao、Bin Yang、Ge Wang、Li-Na Guo、Yong-Min Liang、Shang-Dong Yang
DOI:10.1002/chem.201003561
日期:2011.5.9
developed by copper‐catalyzed decarboxylative coupling of alkenyl, alkynyl carboxylic acids, and N‐benzylproline, respectively, with R2P(O)H (see scheme). All classes of products are important precursors for preparation of biologically active molecules and various phosphorus ligands. This finding represents the first example of copper‐catalyzed decarboxylative coupling to construct CP bonds.
Efficient Cycloisomerization of Propargyl Amides by Electrophilic Gold(I) Complexes of KITPHOS Monophosphines: A Comparative Study
作者:Simon Doherty、Julian G. Knight、A. Stephen K. Hashmi、Catherine H. Smyth、Nicholas A. B. Ward、Katharine J. Robson、Sophie Tweedley、Ross W. Harrington、William Clegg
DOI:10.1021/om1006769
日期:2010.9.27
Electrophilic gold(I) complexes of diphenyl- and dicyclohexylphosphino-based KITPHOSmonophosphines catalyze the 5-exo-dig cycloisomerization of a range of propargyl amides to afford the corresponding alkylidene oxazolines; in all cases catalysts formed from diphenylphosphino-substituted KITPHOSmonophosphines outperformed their dicyclohexylphosphino counterparts as well as that based on triphenylphosphine