Preparation of Enantioenriched Axially Chiral Anilides via [2+2+2] Cycloaddition of 1,6-Diynes with Trimethylsilylynamides
作者:Ken Tanaka、Kenzo Takeishi
DOI:10.1055/s-2007-983799
日期:2007.9
The rhodium-catalyzed enantioselective [2+2+2] cycloaddition of 1,6-diynes with trimethylsilylynamides provides enantioenriched axially chiral anilides in poor to good yields with good to excellent enantioselectivity. Trimethylsilylynamides can be readily prepared in two steps starting from commercially available bis(trimethylsilyl)acetylene.
铑催化的对映选择性[2+2+2]环加成反应通过1,6-二炔和三甲基硅基炔胺,提供了在较低到良好的产率下获得高至优良对映选择性的轴向手性苯胺。三甲基硅基炔胺可以通过从市售的双(三甲基硅基)乙炔出发的两步合成便捷地制备。