Betti Reaction of Cyclic Imines with Naphthols and Phenols - Preparation of New Derivatives of Betti's Bases
作者:Cristina Cimarelli、Davide Fratoni、Andrea Mazzanti、Gianni Palmieri
DOI:10.1002/ejoc.201001611
日期:2011.4
A large library of aminocycloalkylphenols and -naphthols is obtained by the Betti reaction between activated phenols and naphthols and five- and six-membered cyclic imines. Due to the formation of an intramolecular hydrogen bond in the transition state, the attack takes place regioselectively at the position adjacent to the hydroxy group of the aromatic compounds. X-ray crystallography and chirooptical
通过活化酚和萘酚与五元和六元环亚胺之间的 Betti 反应,获得了大量的氨基环烷基苯酚和萘酚。由于过渡态分子内氢键的形成,攻击发生在与芳族化合物羟基相邻的位置上。在用 (R,R)-酒石酸拆分相应的外消旋物后,使用 X 射线晶体学和手光学方法(电子圆二色性)来确定所获得的两种氨基烷基萘酚的绝对构型。此外,一些氨基烷基萘酚和-苯酚在氮原子上被烷基化,以良好的收率获得N-甲基化产物。