anol trimethylsilyl ether), was realized. Interesting aspects, such as 1,4-asymmetric induction by the remote sulfinyl group of the aldehyde but also the stereochemical control and kinetic resolution of the racemic substrate by the chiral organocatalyst were examined. Finally, an unexpected stereoselective retro-aldol reaction catalyzed by l-proline was pointed out.
在仲胺(吗啉,
哌啶,1-脯
氨酸,1-脯
氨酰胺和(S)-(-)-α,α
-二苯基-2-
吡咯烷
甲醇三甲基甲
硅烷基醚)的催化下,将
丙酮添加到rac -2-甲基亚磺酰基-
苯甲醛中,实现了。研究了有趣的方面,例如醛的远端亚磺酰基进行的1,4-不对称诱导,以及手性有机催化剂的立体
化学控制和外消旋底物的动力学拆分。最后,指出了由1-脯
氨酸催化的意外的立体选择性逆向-羟醛反应。