Study of the Addition of Grignard Reagents to 2-Aryl-3<i>H</i>-indol-3-ones<sup>1</sup>
作者:Yahua Liu、William W. McWhorter
DOI:10.1021/jo020715f
日期:2003.4.1
Grignardreagents are added to the carbonyl group of 2-aryl-3H-indol-3-ones to generate 3-alkyl(or phenyl)-2-aryl-3H-indol-3-ols, which are in turn rearranged to yield 2-alkyl(or phenyl)-2-aryl-1,2-dihydro-3H-indol-3-ones.
Enantioselective aza-Henry reactions of cyclic α-carbonyl ketimines under bifunctional catalysis
作者:Alejandro Parra、Ricardo Alfaro、Leyre Marzo、Alberto Moreno-Carrasco、José Luis García Ruano、José Alemán
DOI:10.1039/c2cc34053d
日期:——
The aza-Henry reaction of nitroalkanes with the CN group of 2-aryl-3H-indol-3-ones catalyzed by thiourea-chincona derivatives takes place with good yield and high ee's.
Organocatalytic Enantioselective Aza-Friedel-Crafts Reaction of Cyclic Ketimines with Pyrroles using Imidazolinephosphoric Acid Catalysts
作者:Shuichi Nakamura、Nazumi Matsuda、Mutsuyo Ohara
DOI:10.1002/chem.201601573
日期:2016.7.4
Organocatalytic enantioselective aza‐Friedel–Crafts reactions of cyclic ketimines with pyrroles or indoles were catalyzed by imidazoline/phosphoric acidcatalysts. The reaction was applied to various 3H‐indol‐3‐ones to afford products in excellent yields and enantioselectivities. The chiral catalysts can be recovered by a single separation step using column chromatography and are reusable without further
Asymmetric Proline-Catalyzed Addition of Aldehydes to 3<i>H</i>-Indol-3-ones: Enantioselective Synthesis of 2,3-Dihydro-1<i>H</i>-indol-3-ones with Quaternary Stereogenic Centers
作者:Magnus Rueping、Ramesh Rasappan、Sadiya Raja
DOI:10.1002/hlca.201200498
日期:2012.11
2‐aryl‐substituted 3H‐indol‐3‐ones affords 2,2‐disubstituted 2,3‐dihydro‐1H‐indol‐3‐one derivatives with excellent enantioselectivities. In addition, the synthesis of a chiral derivative, (S)‐2‐(2‐bromophenyl)‐2,3‐dihydro‐2‐(2‐hydroxyethyl)‐1H‐indol‐3‐one, which can be used as an intermediate for the preparation of the natural product hinckdentine A was accomplished with a high level of enantioselectivity.
Proline-Catalyzed Enantioselective Synthesis of Aza-Quaternary Carbon Derivatives
作者:Zhixiang Xie、Liqi Li、Manyi Han、Mingxing Xiao
DOI:10.1055/s-0030-1260773
日期:2011.7
2-Aryl-3H-indol-3-ones reacted with aldehydes or ketones in the presence of l-proline as a catalyst to give the corresponding aza-quaternary carbon addition product in good yield with moderate to excellent regioselectivity and enantioselectivity. The system was applied to the reaction of 2-(2-bromo-phenyl)-3H-indol-3-one and acetaldehyde to give 2-[2-(2-bromophenyl)-3-oxoindolin-2-yl]acetaldehyde, which is a precursor for the synthesis of some alkaloids such as hinckdentine A.