An expedient synthesis of 1,2-dihydrobenzo[g]quinoline-5,10-diones via copper(II) triflate-catalyzed intramolecular cyclization of N-propargylaminonaphthoquinones
摘要:
An expedient synthesis of a series of 1,2-dihydrobenzo[g]quinoline-5,10-diones in good yields has been accomplished via three-component one pot sequential reactions of 2-hydroxynaphthalene-1,4-dione, substituted anilines and propargyl as well as 3-ethylpropargyl bromides furnishing N-propargylaminonaphthoquinones, and their concomitant copper(II) triflate-catalyzed intramolecular 6-endo-dig cyclization. (C) 2013 Elsevier Ltd. All rights reserved.
3-indolylnaphthoquinones with amines, such as various (hetero)aromaticamine and aliphatic amine via t-BuOK-mediated oxidative coupling at room temperature has been developed. This reaction provides efficient access to the biologically important and synthetically useful 2-amino-1,4-naphthoquinones and 2-amino-3-indolylnaphthoquinones with good yields undermildconditions. The present protocol is simple
1,4-萘醌和相关的 3-吲哚基萘醌与胺(例如各种(杂)芳香胺和脂肪胺)在室温下通过 t -BuOK 介导的氧化偶联进行无过渡金属胺化。该反应可以在温和条件下以良好的收率有效地获得具有重要生物学意义和合成用途的2-氨基-1,4-萘醌和2-氨基-3-吲哚基萘醌。本方案简单实用,具有良好的官能团耐受性。此外,将所得2-氨基-3-吲哚基萘醌进一步转化合成多环N-杂环。
Photoinduced EDA Complexes Enabled Radical Tandem Cyclization/Arylation of Unactivated Alkene with 2-Amino-1,4-naphthoquinones
作者:Bin Sun、Xiayue Shi、Xiaohui Zhuang、Panyi Huang、Rongcheng Shi、Rui Zhu、Can Jin
DOI:10.1021/acs.orglett.1c00268
日期:2021.3.5
A visible-light-induced radicaltandemcyclization/arylation between 2-amino-1, 4-naphthoquinone and N-allyl-2-bromo-2,2-difluoroacetamides has been developed without an external photocatalyst. The transformation could be carried out at room temperature and gave a variety of C-3-functionalized 2-amino-1,4-naphthoquinone derivatives in moderate to excellent yields. Moreover, mechanistic studies revealed
Facile Synthesis of 2‐Amino‐1,4‐naphthoquinones catalyzed by Molecular Iodine under Ultrasonic Irradiation
作者:Bing Liu、Shun‐Jun Ji
DOI:10.1080/00397910701866254
日期:2008.3.28
Abstract The conjugate addition reactions of amines with 1,4‐naphthoquinone were catalyzed efficiently by moleculariodine under ultrasonic irradiation to afford 2‐amino‐1,4‐naphthoquinones in moderate to excellent yields.
one-pot biarylamination of quinones with arylamines was developed to synthesize N-arylamine-functionalized p-iminoquinones derivatives. The approach employed AgOAc as the catalyst and (NH4)2S2O8 as the oxidant in the presence of 3-chlorophenylboronic acid, giving a series of N-arylamine-functionalized p-iminoquinone derivatives in moderate to good yields whereas reaction in the absence of the 3-chlorophenylboronic
开发了醌与芳胺的简明一锅二芳基化合成N-芳胺功能化的对亚氨基醌衍生物。该方法在 3-氯苯基硼酸存在下使用 AgOAc 作为催化剂,使用 (NH 4 ) 2 S 2 O 8作为氧化剂,以中等至良好的收率得到一系列N-芳胺官能化的对亚氨基醌衍生物,而反应在不存在 3-氯苯基硼酸,得到一系列N-芳胺官能化的 1,4-萘醌衍生物。这种催化方法代表了醌双官能化的分步经济且方便的策略。
Copper(I)-Mediated Divergent Synthesis of Pyrroquinone Derivatives and 2-Halo-3-amino-1,4-quinones
作者:Bei Wang、Hong Xu、Fu-Yu Li、Ji-Yu Wang
DOI:10.1021/acs.joc.3c00325
日期:2023.7.7
divergent transformation of 2-amino-1,4-quinones for the synthesis of pyrroquinone derivatives and 2-halo-3-amino-1,4-quinones was disclosed. The mechanistic study showed that both the tandem cyclization and halogenation involved a Cu(I)-catalyzed oxidative radical process. This protocol not only constructed a series of novel pyrroquinone derivatives with high atom economy but also provided a new method
公开了用于合成吡咯醌衍生物和2-卤代-3-氨基-1,4-醌的2-氨基-1,4-醌的发散转化。机理研究表明串联环化和卤化均涉及Cu(I)催化的氧化自由基过程。该方案不仅构建了一系列具有高原子经济性的新型吡咯醌衍生物,而且提供了一种以 CuX (X = I , Br, Cl) 作为 X (X = I、Br、Cl) 来源。