Primary amine catalyzed aldol reaction of isatins and acetaldehyde
作者:Qunsheng Guo、John Cong-Gui Zhao
DOI:10.1016/j.tetlet.2012.01.108
日期:2012.4
alkaloid-derived chiral primary amines were applied as the catalyst for the cross aldol reaction of isatins with acetaldehyde. With the quinine-derived amine catalyst 3, the desired aldol products were obtained in high yields and good enantioselectivities (up to 93% ee) under the optimized conditions. Although other enolizable aldehydes and ketones may also be applied in this reaction, the ee values obtained