Combining prolinamides with 2-pyrrolidinone: Novel organocatalysts for the asymmetric aldol reaction
作者:Ismini Vlasserou、Maria Sfetsa、Dimitrios-Triantafyllos Gerokonstantis、Christoforos G. Kokotos、Panagiota Moutevelis-Minakakis
DOI:10.1016/j.tet.2018.03.054
日期:2018.5
identified as excellent organocatalysts for the aldol reaction. The combination of prolinamides with derivatives bearing the 2-pyrrolidinone scaffold, deriving from pyroglutamic acid, led to the identification of novel organocatalysts for the intermolecular asymmetric aldol reaction. The new hybrids were tested both in organic and aqueous media. Among the compounds tested, 22 afforded the best results in petroleum
肽,特别是脯氨酰胺已被确认为醛醇缩合反应的优良有机催化剂。脯氨酰胺与衍生自焦谷氨酸的带有2-吡咯烷酮骨架的衍生物的组合导致鉴定用于分子间不对称醛醇缩合反应的新型有机催化剂。新型杂交种在有机和水性介质中均经过测试。在测试的化合物中,有22种化合物在石油醚中的效果最好,而25种化合物在盐水中的产率和选择性高。然后,利用各种酮和醛,高收率(高达100%),优异的非对映异构体(高达97:3 dr)和对映选择性(高达99%)获得醛醇缩合反应的产物。ee)。