Epoxy ether cleaving reactions catalyzed by supporting Lewis acidic ionic liquid

Zhi, Hui; Shi, Hong; Hu, Yun; Xia, Ke; Zhang, Peng; Yang, Jin Fei

doi:10.1016/j.cclet.2012.09.015

Cited by 8 publications

(3 citation statements)

References 37 publications

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“…Another possibility for immobilisation of ILs is impregnation of the solid support using a solution of the IL in an organic solvent. This method was used to deposit [(C 2 ) 3 NH]Cl/AlCl 3 on the surface of molecular sieves [24] and pyridinium chloride or tetrapropylammonium chloride on silica [25].…”

Section: Preparation and Characterization Of Supported Acidic Ionimentioning

confidence: 99%

“…To solve problems caused by moisture sensitivity, [(C 2 ) 3 NH]Cl/AlCl 3 was supported on molecular sieves by impregnation and was used efficiently in the ring-opening of various epoxides with POCl 3 (Scheme 22) [24]. The corresponding tris(chloroalkyl)phosphates ( 6 ) were obtained in excellent yields and the catalyst could be recycled five times without any loss in its activity.…”

Section: Catalytic Reactions In the Presence Of Acidic Silpsmentioning

confidence: 99%

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The Use of Supported Acidic Ionic Liquids in Organic Synthesis

Skoda‐Földes

2014

Molecules

114

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Abstract:Catalysts obtained by the immobilisation of acidic ionic liquids (ILs) on solid supports offer several advantages compared to the use of catalytically active ILs themselves. Immobilisation may result in an increase in the number of accessible active sites of the catalyst and a reduction of the amount of the IL required. The ionic liquid films on the carrier surfaces provide a homogeneous environment for catalytic reactions but the catalyst appears macroscopically as a dry solid, so it can simply be separated from the reaction mixture. As another advantage, it can easily be applied in a continuous fixed bed reactor. In the present review the main synthetic strategies towards the preparation of supported Lewis acidic and Brønsted acidic ILs are summarised. The most important characterisation methods and structural features of the supported ionic liquids are presented. Their efficiency in catalytic reactions is discussed with special emphasis on their recyclability.

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Section: Preparation and Characterization Of Supported Acidic Ionimentioning

confidence: 99%

Section: Catalytic Reactions In the Presence Of Acidic Silpsmentioning

confidence: 99%

The Use of Supported Acidic Ionic Liquids in Organic Synthesis

Skoda‐Földes

2014

Molecules

114

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“…Notably, the by-product of triethylamine hydrochloride salt was a valuable chemical, which can be used as a phase transfer catalyst and a basic raw material for medicine and other organic synthesis. [38][39][40] We next examined other bases for the coupling reaction of 1a with COS. The results revealed that the basicity of the bases had a significant effect on the reaction.…”

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confidence: 99%