Stereochemically Rich Polycyclic Amines from the Kinetic Resolution of Indolines through Intramolecular Povarov Reactions
作者:Chang Min、Daniel Seidel
DOI:10.1002/chem.201602314
日期:2016.7.25
Under control of a chiral Brønsted acid catalyst, racemic indolines undergo intramolecular Povarov reactions with achiral aromatic aldehydes bearing a pendent dienophile. One enantiomer of the indoline reacts preferentially, resulting in the highly enantio‐ and diastereoselective formation of polycyclic heterocycles with four stereogenic centers. This kinetic resolution approach exploits the differential
在手性布朗斯台德酸催化剂的控制下,外消旋二氢吲哚与带有悬垂的亲双烯体的非手性芳族醛发生分子内的Povarov反应。吲哚啉的一种对映异构体优先反应,导致具有四个立体生成中心的多环杂环的高度对映异构和非对映异构选择性形成。这种动力学拆分方法利用了非对映异构离子对的差异形成/反应性。