Modular Routes Towards New N,O-Bidentate Ligands Containing an Electronically Delocalised β-Enaminone Chelating Backbone
作者:Udo Beckmann、Eva Eichberger、Monika Lindner、Melanie Bongartz、Peter C. Kunz
DOI:10.1002/ejoc.200800372
日期:2008.8
Nickel complexes with N,O-chelating ligands turned out to be promising catalysts in that field. In this work a series of newN,O ligands with an electronicallydelocalisedβ-enaminonebackbone were synthesised and fully characterised. The ligand design was inspired by the ligand found in the most efficient nickel catalyst for polyketone synthesis and developed to a highly modular LEGO®-like arsenal of
PIDA-Mediated Oxidative C−C Bond Formation: Novel Synthesis of Indoles from <i>N</i>-Aryl Enamines
作者:Wenquan Yu、Yunfei Du、Kang Zhao
DOI:10.1021/ol900576a
日期:2009.6.4
A variety of functionalized indoles were synthesized from N-arylenaminesvia PIDA-mediated oxidative carbon−carbon bond formation. The features of the present reaction include facilitative preparation of substrates 2, good functional group tolerance, and mild reaction conditions without transition metals.