Nitroacetic acid was fused with eighteen aromatic aldehydes and gave the respective β- nitrostyrenes. It was more reactive towards aldehydes with electron-withdrawing than with electron-releasing substituents. Nitromethane adducts or nitro-olefins were formed from the reaction of enamines with nitroacetic acid. Di-(
![2-甲氧基-4-[(e)-2-硝基乙烯基]苯酚结构式](https://image.chemsrc.com/caspic/025/22568-51-0.png)