On-Water Synthesis of 2-Substituted Quinolines from 2-Aminochalcones Using Benzylamine as the Nucleophilic Catalyst
作者:So Young Lee、Cheol-Hong Cheon
DOI:10.1021/acs.joc.8b01675
日期:2018.11.2
On-water synthesis of 2-substituted quinolines from 2-aminochalcone derivatives was developed using benzylamine as the nucleophilic catalyst. Various 2-aminochalcones could be applied to this protocol, and the desired 2-substituted quinoline products were isolated in excellent yields by simple filtration. Furthermore, we elucidated the role of benzylamine in this transformation and provided the detailed
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‐Butoxide‐Mediated Synthesis of 3,4′‐Biquinolines from 2‐Aminochalcones
作者:Jiye Jeon、So Young Lee、Cheol‐Hong Cheon
DOI:10.1002/adsc.201900029
日期:2019.5.14
protocol to synthesize 3,4’‐biquinolinesfrom2‐aminochalcones in the presence of a stoichiometric amount of sodium tert‐butoxide as the nucleophilic promotor was developed. Conjugate addition of tert‐butoxide to 2‐aminochalcones provided the corresponding enolates, which underwent Michael addition to another molecule of 2‐aminochalcone to afford a dimeric species of 2‐aminochalcones. Subsequent cyclization
Stereoselective construction of novel biaryl bridged seven-membered ring scaffolds via intramolecular [3 + 2] cycloaddition reactions
作者:Hafiza Marium Butt、Shiqiang Wei、Yue Wang、Jingping Qu、Baomin Wang
DOI:10.1016/j.tetlet.2021.153510
日期:2021.12
A novel approach to biaryl bridged seven-membered carbocyclic scaffolds was developed by means of an intramolecular [3 + 2] cycloaddition process of in situ formed azomethine ylides from 2-cinnamoyl-2'-formyl biphenyl and diethyl aminomalonate hydrochloride. A range of biaryl bridged carbocyclic motifs with five-membered pyrrole ring bearing three steregenic centers was achieved with good to excellent