Triphenylphosphine-cyclometallated iridium(III) pyrimidine complexes: Synthesis, crystal structures and application in α-alkylation of ketones with alcohols
作者:Chen Xu、Xin-Ming Dong、Zhi-Qiang Wang、Xin-Qi Hao、Zhen Li、Lu-Meng Duan、Bao-Ming Ji、Mao-Ping Song
DOI:10.1016/j.jorganchem.2011.11.033
日期:2012.3
NMR, IR, ESI-MS, and elemental analysis. Additionally, their detailed structures have been determined by X-ray single-crystal diffraction. The complex 1 was a PPh3-biscyclometalated Ir(III) complex, while 2 was a PPh3-monocyclometalated Ir(III) complex. These complexes were found to be efficient catalysts for α-alkylation of ketones with alcohols.
Efficient, Regioselective Palladium-Catalyzed Tandem Heck-Isomerization Reaction of Aryl Bromides and Non-Allylic Benzyl Alcohols
作者:Matthew L. Crawley、Kristin M. Phipps、Igor Goljer、John F. Mehlmann、Joseph T. Lundquist、John W. Ullrich、Cuijian Yang、Paige E. Mahaney
DOI:10.1021/ol900036y
日期:2009.3.5
An efficient and mild method to couple arylbromides and activated non-allylic alcohols in a Heckreaction with tandem isomerization to selectively afford high yields of 1,5-diarylalkan-1-ones has been developed. Mechanistic insight was gained through NMR studies of products derived from deuterium-labeled intermediates.
We report a visible-light-induced iron-catalyzed α-alkylation of ketones. The photocatalytic system is based on the single diaminocyclopentadienone iron tricarbonyl complex. Two catalytic intermediates of this complex are able to harvest light, allowing the synthesis of substituted aromatic and aliphatic ketones at room temperature using the borrowing hydrogen strategy in the presence of various substituted
A dual nickel/photoredox catalyzed selective radical-radical cross-coupling reaction has been developed with readily available carboxylicacids and their NHPI ester derivatives as coupling partners. This synergistic catalysis enables the mild and efficient building of C(sp2)−C(sp3) bonds or C(sp3)−C(sp3) bonds, affording structurally complex ketones and congested products with all-carbon quaternary