A new PEG-1000-based dicationic ionic liquid exhibiting temperature-dependent phase behavior with toluene and its application in one-pot synthesis of benzopyrans.
A new recyclable temperature-dependant phase-separation system comprised of PEG-1000-based dicationic acidic ionic liquid and toluene was developed and used in one-pot three-component condensation to prepare benzopyrans in excellent yields (up to 93%).
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, China.
Huizhen
H
Zhi
Chunxu
C
Lü
Qiang
Q
Zhang
Jun
J
Luo
D001578:Benzopyrans / Q000138:chemical synthesis* / Q000737:chemistry; D002384:Catalysis; D052578:Ionic Liquids / Q000737:chemistry*; D044367:Phase Transition; D011092:Polyethylene Glycols / Q000737:chemistry*; D013696:Temperature; D014050:Toluene / Q000737:chemistry*
D001578:Benzopyrans; D052578:Ionic Liquids; D014050:Toluene; D011092:Polyethylene Glycols