Efficient Organoruthenium Catalysts for α‐Alkylation of Ketones and Amide with Alcohols: Synthesis of Quinolines
<i>via</i>
Hydrogen Borrowing Strategy and their Mechanistic Studies
for C−C bond formation and exhibited excellent performance in the dehydrogenative coupling of ketones and amides. In the synthesis of C–C bonds, alcohols were utilized as the alkylating agent. A broad range of substrates, including sterically hindered ketones and alcohols, were well tolerated under the optimized conditions (TON up to 47000 and TOF up to 11750 h−1). This ruthenium (II) catalysts were
Retracted: Synthesis of 2‐Arylisoindoline Derivatives Catalyzed by Reusable 1,2,4‐Triazole Iridium on Mesoporous Silica through a Cascade Borrowing Hydrogen Strategy
作者:Wei Yao、Chenyang Ge、Yilin Zhang、Xiao‐Feng Xia、Long Wang、Dawei Wang
DOI:10.1002/chem.201904095
日期:2019.12.13
2,4-triazole iridium complex to mesoporous MCM-41 generated a heterogeneous catalyst that was found to be effective in the synthesis of 2-aryl isoindolines, quinolines, cyclic amines, and symmetrical secondaryamines through a cascade borrowing hydrogen strategy. Interestingly, the supported heterogeneous iridium catalyst prepared from the 1,2,4-triazole iridium complex and mesoporous MCM-41 exhibited
were synthesized from 2‐aminobenzyl alcohols and secondaryalcohols. The effectiveness of this protocol was further extended by successfully synthesizing 2‐alkylaminoquinolines in a one‐pot fashion from amino alcohol, aliphatic nitriles, and alcohols. Gram scale synthesis of various compounds was also investigated to demonstrate the synthetic applicability of this methodology.
Facile synthesis of substituted quinolines by iron(<scp>iii</scp>)-catalyzed cascade reaction between anilines, aldehydes and nitroalkanes
作者:Sachinta Mahato、Anindita Mukherjee、Sougata Santra、Grigory V. Zyryanov、Adinath Majee
DOI:10.1039/c9ob01294j
日期:——
A library of substituted quinolines has been synthesized by the reaction of aldehydes, anilines and nitroalkanes using a catalytic amount of Fe(iii) chloride. The reaction is a simple, efficient, one-pot, three-component domino strategy in ambient air which afforded the products in high yields. A probable pathway of the reaction is a sequential aza-Henry reaction/cyclization/denitration. The use of
Three-Component Povarov Reaction with Alcohols as Alkene Precursors: Efficient Access to 2-Arylquinolines
作者:Xinjian Li、Qi Xing、Pan Li、Jingjing Zhao、Fuwei Li
DOI:10.1002/ejoc.201601343
日期:2017.1.18
An atom-economic and efficient approach to the synthesis of 2-arylquinolines has been developed. The protocol involves an iron-catalysed cascade N-alkylation/aerobic oxidation/Povarov reaction, and the desired quinolines were prepared in moderate to excellent yields from readily accessible anilines, aldehydes, and EtOH/nPrOH, with water as the only side-product. The aniline substrates also act as a