Diarylprolinol silyl ethers immobilized onto polystyrene have been employed as catalysts in the enantioselective domino Michael-Knoevenagel reaction of dimethyl 3-oxoglutarate and 3-substituted acrolein derivatives, including aliphatic ones. The best catalyst allows the preparation of highly functionalized cyclohexane derivatives in a straightforward and efficient manner, both under batch and continuous flow conditions.
在 3-氧代
戊二酸二甲酯和 3-取代的
丙烯醛衍
生物(包括脂肪族衍
生物)的对映选择性多米诺迈克尔-Knoevenagel 反应中,固定在聚
苯乙烯上的二叔丁基
酚硅醚被用作催化剂。无论是在间歇还是连续流动条件下,最佳催化剂都能以直接高效的方式制备高度官能化的
环己烷衍
生物。