1. Concise Synthesis of 4-Arylquinolines via Intramolecular Cyclization of Allylamines and Ketones.
- Author
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Wei, Wen ‐ Tao, Cheng, Ya ‐ Juan, Hu, Yu, Chen, Yan ‐ Yan, Zhang, Xue ‐ Jing, Zou, Yong, and Yan, Ming
- Subjects
QUINOLINE ,KETONES ,CATALYSIS ,CHEMICAL industry ,CHEMICAL reactions - Abstract
The intramolecular cyclization of allylamines and ketones was achieved in the presence of potassium tert-butoxide and N,N-dimethylformamide. A series of 4-arylquinolines was prepared in good yields. The reaction could be accomplished at room temperature using only a substoichiometric amount of potassium tert-butoxide. On the other hand, the reaction of the structurally analogous allyl ethers afforded diverse products. The reaction may proceed via the rearrangement of α-aminoallyl radicals and the generation of nucleophilic enamine intermediates. This finding represents a new strategy for the synthesis of quinoline derivatives from readily available 2-(allylamino)phenyl ketones. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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