1,3‐Dipolar cycloaddition of stabilized azomethine ylides to alkenyl quinolines: An efficient route to polyfunctionalized 3‐pyrrolidinylquinoline derivatives
Some new polysubstituted 3-pyrrolidinylquinolinyl derivatives were prepared by 1,3 dipolar cycloadditions of an azomethineylide, generated in situ from benzylideneimine of methylglycinate and triethylamine in the presence of LiBr, to quinolyl α,β-unsaturated esters
Heterocyclic anti-epileptogenic agents and methods of use thereof
申请人:Queen's University at Kingston
公开号:US20030114441A1
公开(公告)日:2003-06-19
Methods and compounds, such as &bgr;-heterocyclic-&bgr;-amino acids, useful for the inhibition of epileptogenesis are disclosed. Methods for preparing and using the &bgr;-heterocyclic-&bgr;-amino acids of the invention are also described.
Abstract The synthesis of some new functionalized quinolyl derivatives relies on the 1,3‐dipolarcycloaddition of an azomethineylide, generated from sarcosine and paraformaldehyde, to quinolyl α,β‐unsaturated esters, followed by oxidation of the pyrrolidinyl moiety to pyrrole with activated MnO2.
The behavior of 2-chloroquinoline-3-carbaldehyde and 2-oxoquinoline-3-carbaldehyde toward stabilized methylenetriphenylphosphoranes and secondary amines
作者:Fatma A. El-Samahy、Nabila M. Ibrahim、Mohamed R. H. Mahran
DOI:10.1080/10426507.2015.1085042
日期:2016.1.2
Abstract In this study use was made of the Wittig carbonyl olefination reaction and stereo-identification of the resulting alkenes. Condensation of 2-chloroquinoline-3-carbaldehyde with some selected stabilized phosphonium ylides yielded a mixture of the corresponding E and Z olefins in each case. On the other hand reaction of 2-oxoquinoline-3-carbaldehyde with the selected ylides afforded the respective