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Citation: DENG Zhaojing, GAO Kangli, LI Goucheng, HAN Guozhi. Ring-Opening Reaction of N-(2,4-Dinitrophenyl) Pyridinium Chloride by Ultraviolet Spectrum[J]. Chinese Journal of Applied Chemistry, ;2015, 32(12): 1379-1385. doi: 10.11944/j.issn.1000-0518.2015.12.150168 shu

Ring-Opening Reaction of N-(2,4-Dinitrophenyl) Pyridinium Chloride by Ultraviolet Spectrum

1.
College of Science, Nanjing Tech University, Nanjing 210009, China

Corresponding author: HAN Guozhi,
Received Date: 14 May 2015
Available Online: 20 July 2015
Fund Project: 东南大学分子电子学国家重点实验室开放课题(20111218)资助 (20111218)

The ring-opening of pyridinium salt is an important multi-step tandem reaction,which have wide application in organic synthesis. However, principle of the ring-opening process partly remains some controversy. In this paper,based on the difference in molecular conjugate structure before and after ringopening reaction, the principle of ring-opening of pyridinium salt was studied by ultraviolet spectrum.Meanwhile,the factors influenced the formation of N-(5-anilino-2,4-pentadienylidene) aniline hydrochloride was evaluated in detail. Furthermore,ultrasonic radiation was introduced in the ring-opening reaction of pyridinnium salt and the efficiency of the ring-opening was improved for 94%.
- N-(dinitrophenyl) pyridinium chloride,
- ring-opening,
- N-(anilino-pentadienylidene) aniline hydrochloride,
- UV spectrum
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