Metal-Free, Ionic Liquid-Mediated Synthesis of Functionalized Quinolines
作者:Jaideep B. Bharate、Sandip B. Bharate、Ram A. Vishwakarma
DOI:10.1021/co500047w
日期:2014.11.10
An expedient and metal-free synthetic protocol for construction of substituted quinolines has been developed from anilines and phenylacetaldehydes using imidazolium cation-based ionic liquids as the reaction medium. Mechanistic analysis indicated that the reaction occurs through C-C and C-N bond formation to produce isolable 2,3-disubstituted quinoline intermediates, which undergo C-C bond cleavage to produce 3-substituted quinolines. The reaction proceeds smoothly with a range of functionalities in good to excellent yields. Advantages of this protocol include metal-free, environmentally friendly, recyclable reaction media, higher yields and shorter reaction times, and thus is promising for the efficient combinatorial synthesis of structurally diverse 2,3-disubstituted and 3-substituted quinolines.
QUINOLINE DERIVATIVES
申请人:Pfizer Products Inc.
公开号:EP1562908A1
公开(公告)日:2005-08-17
US6894062B1
申请人:——
公开号:US6894062B1
公开(公告)日:2005-05-17
Ligand-Free, Quinoline N-Assisted Copper-Catalyzed Nitrene Transfer Reaction To Synthesize 8-Quinolylsulfimides
作者:Xinsheng Xiao、Sanping Huang、Shanshan Tang、Guokai Jia、Guangchuan Ou、Yangyan Li
DOI:10.1021/acs.joc.9b00281
日期:2019.6.21
An efficient copper-catalyzed, quinolyl N-directed nitrene transferreaction to 8-quinolylsulfides was described. A variety of 8-quinolylsulfimides with different functional groups were synthesized in moderate to high yields. The obtained 8-quinolylsulfimides were proved to be promising novel type of bidentate ligands in Pd(II)-catalyzed allylic alkylation.
The present invention relates to compounds of Formula I, wherein R1, R2, R3, R4, and n are as defined, and to pharmaceutically acceptable salts of said compounds. Compounds of Formula I have activity in agonizing 5HT7 receptors and are useful in treating, for example, disorders that can be treated by modulating circadian rhythms.