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Rhodium‐Catalyzed Cascade Reactions of Indoles with 4‐Hydroxy‐2‐Alkynoates for the Synthesis of Indole‐Fused Polyheterocycles
Advanced Synthesis & Catalysis ( IF 5.4 ) Pub Date : 2020-05-28 , DOI: 10.1002/adsc.202000493
Xiaowei Wu 1, 2 , Pinyi Li 1 , Yangbin Lu 3 , Jin Qiao 3 , Jingwei Zhao 1, 3 , Xiuwen Jia 1 , Hangcheng Ni 3 , Lichun Kong 4 , Xiaoning Zhang 3 , Fei Zhao 1, 3
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Herein, an efficient and regioselective Rh(III)‐catalyzed [4+2] annulation/lactonization cascade of indoles with 4‐hydroxy‐2‐alkynoates at room temperature to access the furo[3′,4′:4,5]pyrimido[1,6‐a ]indole‐1,5(3H ,4H )‐diones is described. This method features mild reaction conditions, operational simplicity, excellent regioselectivity, broad substrate scope with good functional group tolerance, and good to excellent yields.

中文翻译:

铑催化的吲哚与4-羟基-2-烷基酯的级联反应,用于吲哚融合的多杂环化合物的合成

本文中,在室温下高效和区域选择性的Rh(III)催化吲哚的[4 + 2]环化/内酯化级联反应,其具有4-羟基-2-链烷酸酯,可进入呋喃[3',4':4,5]嘧啶描述了[ 1,6 - a ]吲哚-1,5 (3 H,4 H)-二酮。该方法的特点是反应条件温和,操作简便,区域选择性出色,底物范围广,具有良好的官能团耐受性以及良好的产率。
更新日期:2020-07-29
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