An atom-efficient and practical synthesis of new pyridinium ionic liquids and application in Morita-Baylis-Hillman reaction.
New ionic liquids containing (3-chloro-2-hydroxypropyl)-functionalized pyridinium cations have been synthesized by the ultrasound-assisted, atom-efficient, room temperature reaction of pyridine with acid and 3-chloro-propylene oxide, the acid providing the anionic component of the resultant ionic liquids, and under the ultrasound, a clear yield increase results and a dramatic reduction of the reaction time accompanied by an improved quality of the products occurs. Furthermore, the application of new ionic liquids were tested as solvents in Morita-Baylis-Hillman reaction, in some cases, good results were obtained.
Zhao
Sanhu
S
Department of Chemistry, Xinzhou Teachers University, Xinzhou 034000, China. sanhuzhao@yahoo.cn
Zhao
Erlao
E
Shen
Pin
P
Zhao
Mingen
M
Sun
Jinyu
J
D000477:Alkylating Agents / Q000737:chemistry; D002384:Catalysis; D002855:Chromatography, Thin Layer; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D011726:Pyridinium Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D014239:Trichloroepoxypropane / Q000737:chemistry; D014465:Ultrasonics
D000477:Alkylating Agents; D007202:Indicators and Reagents; D011726:Pyridinium Compounds; D014239:Trichloroepoxypropane