Rh(I)-Catalyzed Asymmetric Synthesis of 3-Substituted Isoindolinones through CO Gas-Free Aminocarbonylation
作者:Masahiko Fujioka、Tsumoru Morimoto、Takayuki Tsumagari、Hiroki Tanimoto、Yasuhiro Nishiyama、Kiyomi Kakiuchi
DOI:10.1021/jo300201g
日期:2012.3.16
A highly efficient and accessible synthesis of chiral 3-substituted isoindolinone frameworks is described. The synthesis involved the Rh(I)-catalyzed asymmetric arylation of boronic acids to 2-halobenzaldimines and the subsequent Rh(I)-catalyzed intramolecular aminocarbonylation of the resulting 2-halobenzylamines using an aldehyde as the carbonyl source. The method tolerates a variety of functional
描述了手性3-取代的异吲哚满酮骨架的高效且容易获得的合成。合成涉及硼酸经Rh(I)催化的不对称芳基化成2-卤代苯丙二胺,随后使用醛作为羰基源,经Rh(I)催化的所得2-卤代苄胺的分子内氨基羰基化。该方法可耐受多种官能团,以中等至高收率和高ee值产生异吲哚啉酮衍生物。另外,通过在Rh(I)催化的不对称芳基化之后简单地添加配体和醛,可以在一个锅序列中有效地完成两个Rh(I)催化的转化,以得到手性异吲哚啉酮。