Controllable preparation of phosphonium-based polymeric ionic liquids as highly selective nanocatalysts for the chemical conversion of CO₂ with epoxides

Abstract

Phosphonium-based polymeric ionic liquids (PILs) have been prepared in a controlled way by using a microfluidic technique within an improved membrane microdevice.

La[N(SiMe3)2]3‐Catalyzed Hydroboration of Esters and Other Challenging Unsaturated Groups

“…Carbonate esters could be classified as another kind of esters, normally prepared by the polymerization of CO 2 . The reduction of carbonate esters is a more challenging task as traditional hydride addition remains invalid .…”

Novel porous organocatalysts for cycloaddition of CO2and epoxides

“…It is worth noting the high yield and selectively of these cyclic carbonates under the current mild reactions condition using a metal-free catalyst. Compared to other organocatalaysts immobilized on inert support, namely; ammonium salts on nanocrystalline zeolites, 50 imidazole-based ionic liquid (IL) on graphene oxide 51 and covalent organic frameworks, 52 triphosphonate cavitand on SBA-15, 53 phosphonium-based polymeric IL, 54 phosphonium salt on polystyrene, 55 OMO-2 was signicantly more active. As noted earlier, under the current mild reaction conditions, the yield of SC was limited to 77% (Table 4, entry 7).…”

Hydroxylamino‐Anchored Poly(Ionic Liquid)s for CO2 Fixation into Cyclic Carbonates at Mild Conditions

“…[ 14 ] Therefore, it is urgently necessary to develop novel efficient HBD heterogenous materials for conversion of CO 2 under mild conditions. [ 34,39,40,43,47,50,51 ] Such as PILs tethering hydroxyl and amino acid were constructed, the prominent catalytic performance is ascribed to the synergistic effect of HBD and halogen anions as nucelophilic reagent for opening of epoxides. [ 34,39,40,43 ] Recently reported by Zhang et al.…”