Base-catalyzed three-component direct Mannich reaction of enolizable ketones with high syn-selectivities
作者:Qunsheng Guo、John Cong-Gui Zhao、Hadi Arman
DOI:10.1016/j.tetlet.2012.06.140
日期:2012.9
The three-component direct Mannichreaction between aldehydes, p-toluenesulfonamide, and enolizable ketones was achieved for the first time with organic bases as the catalysts. The corresponding N-tosylated β-aminoketones were obtained in high yields and good to excellent diastereoselectivities using TMG as the catalyst. Through reduction of the ketone group, the reaction product may be converted into