synthesis of chiral tetrahydroquinoline derivatives with excellent enantioselectivities and high yields has been developed through one‐pot cascade biomimetic reduction. The detailed reaction pathway includes the acid‐catalyzed and ruthenium‐catalyzedformation of aromatic quinoline intermediates and biomimetic asymmetric reduction.
作者:Yan Wang、Baobiao Dong、Zikun Wang、Xuefeng Cong、Xihe Bi
DOI:10.1021/acs.orglett.9b01055
日期:2019.5.17
A ligand- and base-free silver-catalyzed reduction of quinolines and electron-deficient aromatic N-heteroarenes in water has been described. Mechanistic studies revealed that the effective reducing species was Ag–H. This versatile catalytic protocol provided facile, environmentally friendly, and practical access to a variety of 1,2,3,4-tetrahydroquinoline derivatives at room temperature.
A novel ring expansion reaction in the reduction of benzylic methoxyamines with lithium aluminium hydride
作者:Susan E. Booth、Paul R. Jenkins、Christopher J. Swain
DOI:10.1039/c39930000147
日期:——
Reduction of the N–O bonds of benzylic hydroxylamines with lithiumaluminiumhydride gives a novel ring expansion reaction that can be explained by a radical mechanism.
用氢化铝锂还原苄基羟胺的N–O键产生了一种新颖的扩环反应,这可以用自由基机理来解释。
Diastereoselective synthesis of linear-fused tricyclic nitrogen heterocycles by a tandem reduction-reductive amination reaction
作者:Richard A. Bunce、Derrick M. Herron、Jason R. Lewis、Sharadsrikar V. Kotturi、Elizabeth M. Holt
DOI:10.1002/jhet.5570400113
日期:2003.1
initiates a reaction sequence involving (1) reduction of the aromatic nitro group, (2) condensation of the resulting hydroxyl-amine or aniline nitrogen with the cycloalkanone and (3) reduction of the imine. The products are isolated in high yield as single diastereomers having the trans-fused ring junction. The observed selectivity is rationalized in terms of a steric effect imposed by the ester group in
1,2,3,4,7,8-Hexahydro-6H-[1,4]diazepino[6,7,1-ij] quinoline derivatives as antipsychotic and antiobesity agents
申请人:Ramamoorthy Sivaramakrishnan P.
公开号:US20060154920A1
公开(公告)日:2006-07-13
Compounds of Formula I or a pharmaceutically acceptable salt thereof are provided:
where R
1
through R
7
are defined herein. The compounds of Formula I are 5HT2c agonists or partial agonists, and are useful for treating a variety of disorders.