Polymeric frustrated Lewis pairs in CO₂/cyclic ether coupling catalysis

Abstract

Frustrated Lewis pairs (FLPs) are now ubiquitous as metal-free catalysts in an array of different chemical transformations. In this paper we show that this reactivity can be transferred to a...

Phosphine-Borane Frustrated Lewis Pairs for Metal-Free CO2/Epoxide Copolymerization

“…Referring to the application of FLP in the polymerization of polar vinyl monomers and oxygenated monomers, , we aim to improve the activity and initiation efficiency for CO 2 copolymerization by constructing FLPs with tunable electronic and steric properties. In this contribution, we report the metal-free FLPs consisting of tertiary phosphine and alkylborane for CO 2 and PO copolymerization, which exhibit moderate activity and high initiation efficiency.…”

A theoretical study of the reaction of borata derivatives of benzene, anthracene and pentacene with CO2

“…1 From a chemical point of view, several systems are able to sequestrate and activate CO 2 . 2 Amines, [3][4][5] ionic liquids and eutectic solvents, [6][7][8] carbenes, [9][10][11][12][13][14] guanidines, [15][16][17] phosphines, [18][19][20][21] frustrated Lewis pairs (FLPs) [22][23][24][25][26][27] and metal organic frameworks (MOFs), [28][29][30] among others, fulfill these tasks.…”

Use of 5,10‐Disubstituted Dibenzoazaborines and Dibenzophosphaborines as Cyclic Supports of Frustrated Lewis Pairs for the Capture of CO2

“…The ability of FLPs to capture CO 2 is known experimentally since 2009 [13,14] . Nowadays, effective FLPs used to capture CO 2 expand from the typical N/B and P/B FLPs, [13–18] to some rhenium based, [19] bridged, [20] and cyclic FLP, [21] passing through more exotic ones containing germanium, [22] aluminum, [23,24] or copper, [25–28] and even including them in polymers [29,30] . In addition, FLPs are being used to activate CO 2 and reduce it to useful chemicals, [5,31–33] like for example methanol, [24,25,34] methane, [35] formates, [17,31] methoxysilane, [36] in a catalytic fashion or not.…”

“…[ 13 , 14 ] Nowadays, effective FLPs used to capture CO 2 expand from the typical N/B and P/B FLPs,[ 13 , 14 , 15 , 16 , 17 , 18 ] to some rhenium based, [19] bridged, [20] and cyclic FLP, [21] passing through more exotic ones containing germanium, [22] aluminum,[ 23 , 24 ] or copper,[ 25 , 26 , 27 , 28 ] and even including them in polymers. [ 29 , 30 ] In addition, FLPs are being used to activate CO 2 and reduce it to useful chemicals,[ 5 , 31 , 32 , 33 ] like for example methanol,[ 24 , 25 , 34 ] methane, [35] formates,[ 17 , 31 ] methoxysilane, [36] in a catalytic fashion or not. Theoretical studies were added to those experimental results, to better understand the reaction mechanism behind the capture and reduction of CO 2 , as well as proposing a systematic way to improve the existing FLP playing with the intrinsic properties of the atoms involved.…”