Gold-Catalyzed Synthesis of Quinolines from Propargyl Silyl Ethers and Anthranils through the Umpolung of a Gold Carbene Carbon
作者:Hongming Jin、Bin Tian、Xinlong Song、Jin Xie、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1002/anie.201606043
日期:2016.10.4
proceeds through a sequential ring opening/1,2‐H‐shift/protodeauration/Mukaiyama aldol cyclization. This method offers a regiospecific and modular access to 2‐aminoquinolines and other quinoline derivatives under mild conditions and with a broad functional‐group tolerance. The conversion is possible on a gram scale, which underlines the synthetic practicability of this methodology. The versatility of the
synthesis of dihydroacridines through synergisticcatalysis, achieving the final target compounds with good to excellent yields and good to excellent enantioselectivities and diastereoselectivities, is reported. The synergistic approach consists in the activation of substituted quinolines with a Lewis acid catalyst that react in a cascade fashion with activated enals in the iminium form. Mechanistic calculations
Lewis Acid-Catalyzed C(<i>sp</i><sup>3</sup>)-C(<i>sp</i><sup>3</sup>) Bond Forming Cyclization Reactions for the Synthesis of Tetrahydroprotoberberine Derivatives
作者:Jianjun Li、Cong Qin、Yang Yu、Huaqiang Fan、Yiwei Fu、Hao Li、Wei Wang
DOI:10.1002/adsc.201601423
日期:2017.7.3
An efficient Lewis acid‐catalyzed C(sp3)–C(sp3) bond forming annulation reaction has been developed. This strategy serves as a new method for the facilesynthesis of tetrahydro‐5H‐isoquinolino[2,1‐g][1,6]naphthyridine derivatives. A wide range of 2‐methylquinoline‐3‐carbaldehydes and 1,2,3,4‐tetrahydroisoquinolines can be applied for this process to afford structurally diverse tetrahydroprotoberberine
已经开发出有效的路易斯酸催化的C(sp 3)–C(sp 3)键形成环化反应。该策略为轻松合成四氢-5 H-异喹啉代[2,1- g ] [1,6]萘啶衍生物提供了一种新方法。各种2-甲基喹啉-3-甲醛和1,2,3,4-四氢异喹啉都可用于该工艺,从而以优异的收率提供结构多样的四氢小ber碱衍生物。
Biocatalytic synthesis of quinoline derivatives via α-amylase catalysed one-pot domino aza-Michael/Aldol/aromatization reactions
作者:Sunil Dutt、Vikas Tyagi
DOI:10.1016/j.tetlet.2021.153527
日期:2021.12
been made available to synthesize substituted quinolines. Herein, we are reporting α-amylase catalysed synthesis of substituted quinolines via one-pot dominoaza-Michael/Aldol/aromatization reactions. Moreover, the α-amylase enzyme from Aspergillus oryzae was found to catalyse the cascade reaction of various 2-aminobenzaldehydes with α, β-unsaturated carbonyls in high catalytic efficiency (56–86% yield)
A series of substituted [1,3,5]triazin-2-yl derivatives, being selective inhibitors of PI3 kinase enzymes, are accordingly of benefit in medicine, for example in the treatment of inflammatory, autoimmune, cardiovascular, neurodegenerative, metabolic, oncological, nociceptive or ophthalmic conditions.