作者:Wei Chen、Wei Du、Lei Yue、Rui Li、Yong Wu、Li-Sheng Ding、Ying-Chun Chen
DOI:10.1039/b616504d
日期:——
The C3-selective enantioselective Michael-type Friedel-Crafts alkylations of indoles with nonchelating alpha,beta-unsaturated alkyl ketones, catalysed by a chiral primary amine derived from natural cinchonine, were investigated. The reactions, in the presence of 30 mol% catalyst, were smoothly conducted at 0 to -20 degrees C. Moderate to good ee (47-89%) has been achieved.
研究了由天然辛可宁衍生的手性伯胺催化的具有非螯合的α,β-不饱和烷基酮的吲哚的C3-选择性对映选择性迈克尔型弗瑞德-克拉夫茨烷基化反应。在30mol%催化剂的存在下,反应在0至-20℃下顺利进行。已经实现了中等至良好的ee(47-89%)。