A novel and efficient procedure for the preparation of 4,4′-bis(chloromethyl)biphenyl by chloromethylation of biphenyl catalyzed by PEG1000-DAIL under homogeneous catalysis in aqueous media

Hu, Yu Lin; Lu, Ming; Ge, Qiang; Wang, Peng Cheng; Lu, Taijin

doi:10.1016/j.jiec.2010.03.005

Cited by 7 publications

(2 citation statements)

References 20 publications

(9 reference statements)

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“…The PEG 1000 linked, dicationic acidic IL (PEG 1000-DIL, Figure 30) was successfully applied in the chloromethylation of biphenyl in aqueous media, giving up to 85% yield. 443 Another similar PEG-IL in combination with methylcyclohexane also proved to be efficient for chloromethylation of aromatic hydrocarbons with good to excellent yields (Figure 30). 444 The novel method does not only enhance the yield but also allows an easy workup.…”

Section: Chemical Reviewsmentioning

confidence: 99%

“…Chloromethylation is the chemical reaction of aromatic rings with formaldehyde and hydrogen chloride catalyzed by zinc chloride to form chloromethyl arenes, which was discovered by Blanc in 1923. The PEG 1000 linked, dicationic acidic IL (PEG 1000-DIL, Figure ) was successfully applied in the chloromethylation of biphenyl in aqueous media, giving up to 85% yield . Another similar PEG-IL in combination with methylcyclohexane also proved to be efficient for chloromethylation of aromatic hydrocarbons with good to excellent yields (Figure ).…”

Section: Thermoregulated Il Systems For Catalysismentioning

confidence: 99%

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Temperature-Responsive Ionic Liquids: Fundamental Behaviors and Catalytic Applications

et al. 2017

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Temperature-responsive ionic liquids (ILs), their fundanmental behaviors, and catalytic applications were introduced, especially the concepts of upper critical solution temperature (UCST) and lower critical solution temperature (LCST). It is described that, during a catalytic reaction, they form a homogeneous mixture with the reactants and products at reaction temperature but separate from them afterward at ambient conditions. It is shown that this behavior offers an effective alternative approach to overcome gas/liquid-solid interface mass transfer limitations in many catalytic transformations. It should be noted that IL-based thermomorphic systems are rarely elaborated until now, especially in the field of catalytic applications. The aim of this article is to provide a comprehensive review about thermomorphic mixtures of an IL with HO and/or organic compounds. Special focus is laid on their temperature dependence concerning UCST and LCST behavior, including systems with conventional ILs, metal-containing ILs, polymerized ILs, as well as the thermomorphic behavior induced via host-guest complexation. A wide range of applications using thermoregulated IL systems in chemical catalytic reactions as well as enzymatic catalysis were also demonstrated in detail. The conclusion is drawn that, due to their highly attractive behavior, thermoregulated ILs have already and will find more applications, not only in catalysis but also in other areas.

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Section: Chemical Reviewsmentioning

confidence: 99%

Section: Thermoregulated Il Systems For Catalysismentioning

confidence: 99%