Enantioselective, Catalytic Trichloromethylation through Visible-Light-Activated Photoredox Catalysis with a Chiral Iridium Complex
作者:Haohua Huo、Chuanyong Wang、Klaus Harms、Eric Meggers
DOI:10.1021/jacs.5b06010
日期:2015.8.5
An enantioselective, catalytic trichloromethylation of 2-acyl imidazoles and 2-acylpyridines is reported. Several products are formed with enantiomeric excess of ≥99%. In this system, a chiral iridium complex serves a dual function, as a catalytically active chiral Lewis acid and simultaneously as a precursor for an in situ assembled visible-light-triggered photoredox catalyst.
报道了 2-酰基咪唑和 2-酰基吡啶的对映选择性催化三氯甲基化。几种产品形成对映体过量≥99%。在该系统中,手性铱配合物具有双重功能,既作为具有催化活性的手性路易斯酸,又作为原位组装的可见光触发光氧化还原催化剂的前体。