Quinoline and its derivatives represent an important class of nitrogen-containing heterocycles as they constitute useful intermediates in organic synthesis and are useful dyes [1]. And they are well known in the pharmaceutical industry and have been shown to possess a broad spectrum of biological activities including such as antiasthmatic, antiinflammatory and antimalarial activity [2]. In addition, quinoline derivatives have been ...
![3-ethyl-2-methylbenzo[f]quinoline结构式](https://image.chemsrc.com/caspic/016/61077-88-1.png)