Direct Asymmetric Mannich Reaction Catalyzed by a d-Glucosamine-Derived Organocatalyst
作者:Rama Peddinti、Arun Sharma
DOI:10.1055/s-0036-1591740
日期:2018.3
Sugar-based primary amines have been employed as organocatalysts for the direct asymmetric Mannich reaction. By catalyst-screening experiments, we observed that catalysts bearing a hydroxy function at C-3 actively participated in the reaction, possibly through hydrogen bonding with the imine generated in situ, to provide β-amino carbonyl compounds with better diastereoselectivity and enantioselectivity
糖基伯胺已被用作直接不对称曼尼希反应的有机催化剂。通过催化剂筛选实验,我们观察到在 C-3 处带有羟基官能团的催化剂积极参与反应,可能是通过与原位生成的亚胺形成氢键,从而提供具有更好非对映选择性和对映选择性的 β-氨基羰基化合物。获得的所有产品都处于良好至极好的对映体过量。