Combining Sustainable Polymerization Routes for the Preparation of Polyesters, Polycarbonates, and Copolymers

Romain, Charles; Williams, Charlotte K.

doi:10.1021/bk-2015-1192.ch009

Cited by 4 publications

(5 citation statements)

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“…[3] Different synthetic approaches can be used to produce polyesters. [4] The most traditional one is the polycondensation of diols with diacids;h owever,t his methodr equires high temperatures to removet he byproducts for achieving high-molecularweightp olymers with significant consequences on the energy costs and on the controlo ft he polymerization process. Alternatively, thesep olymers can be produced by the ring-opening polymerization (ROP) of the related cyclic esters.…”

Section: Introductionmentioning

confidence: 99%

Ring‐Opening Copolymerization of Epoxides with Cyclic Anhydrides Promoted by Bimetallic and Monometallic Phenoxy–Imine Aluminum complexes

et al. 2017

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Two dinuclear aluminum alkyl complexes bearing a salen ligand with alkyl backbone of different length between the nitrogen atoms (1,3‐propylene and 1,5‐pentylene backbone) and the related hemisalen aluminum complex were tested as catalysts in the ring‐opening copolymerization of cyclohexene oxide and limonene oxide with succinic anhydride and phthalic anhydride. The effects of different reaction conditions (co‐catalyst and solvent) on the productivity and selectivity of the reactions were evaluated. The comparison of the catalytic behavior of the dinuclear complexes bearing the aluminum reactive centers at different distances as well as of their mononuclear counterpart suggested that the copolymerization follows a monometallic pathway differently from what was observed in the homopolymerization of CHO.

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Section: Introductionmentioning

confidence: 99%

Ring‐Opening Copolymerization of Epoxides with Cyclic Anhydrides Promoted by Bimetallic and Monometallic Phenoxy–Imine Aluminum complexes

et al. 2017

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“…35,36,[77][78][79][80] Recent progress has enabled the coupling of CO 2 and epoxides to either cyclic or polymeric carbonates, with a high regio-and stereoselectivity and using earth abundant metal catalysts. [81][82][83][84][85][86] These methods are progressively turning into efficient technologies and some of them are currently under pilot development. 80,87 In contrast to functionalization strategies, the reduction of CO 2 provides access to more energetic C 1 products such as formic acid, carbon monoxide or methanol, with carbon atoms at the +II and −II oxidation states.…”

Section: Papermentioning

confidence: 99%

Complexes of the tripodal phosphine ligands PhSi(XPPh₂)₃(X = CH₂, O): synthesis, structure and catalytic activity in the hydroboration of CO₂

et al. 2016

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The coordination chemistry of Fe(2+), Co(2+) and Cu(+) ions was explored with the triphosphine and triphosphinite ligands PhSi{CH2PPh2}3 (1) and PhSi{OPPh2}3 (2), so as to evaluate the impact of the electronic properties of the tripodal phosphorus ligands on the structure and reactivity of the corresponding complexes. The synthesis and characterization of the complexes [Fe(κ(3)-PhSi{CH2PPh2}3)(MeCN)3][OTf]2 (3) (OTf = O3SCF3), [Fe(κ(3)-PhSi{OPPh2}3)(MeCN)3][OTf]2 (3'), [Co(κ(2)-PhSi{CH2PPh2}3)Cl2] (4), [Co(κ(3)-PhSi{OPPh2}3)Cl2] (4'), [Cu(κ(3)-PhSi{CH2PPh2}3)Br] (5) and [Cu(κ(3)-PhSi{OPPh2}3)I] (5') were carried out. The crystal structures of 3, 3', 4, 4', and of the solvates 5·3THF and 5'·THF are reported. Complexes 3-5' were shown to promote the catalytic hydroboration of CO2 with (9-BBN)2 (9-BBN = 9-borabicyclo[3.3.1]nonane). While the iron and cobalt complexes of the triphosphine 1 are more active than the analogous complexes with 2, the opposite trend is observed with the copper catalysts. Overall, the copper catalysts 5 and 5' are both more reactive and more selective than the Fe and Co catalysts, enabling the formation of the acetal H2C(OBBN)2 with a high molar ratio of H2C(OBBN)2 : CH3OBBN up to 92 : 8.

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“…Romain and Williams (39) reported that a single catalyst might be applied for both ring-opening polymerization (ROP) and ring-opening copolymerization (ROCOP) of oxygenated cyclic monomers via a "one-pot" procedure that resulted in various copolymers. They also uncovered a novel chemoselective catalyst control pathway, whereby the nature of the metal chain-end group controlled the polymerization cycle and thereby the composition of the copolymer.…”

Section: Other Catalysts and Functional Peptidesmentioning

confidence: 99%

“…Carbohydrate feedstock was engaged for the production of PLA (38)(39)(40)48), poly(2,5-dihydro-1,4-dioxane) (49), modified cellulose (50), and phosphorus -containing isosorbide esters (51).…”

Section: Biobased Feedstockmentioning

confidence: 99%

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Green Polymer Chemistry: Some Recent Developments and Examples

Cheng

Gross

Smith

2015

ACS Symposium Series

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Combining Sustainable Polymerization Routes for the Preparation of Polyesters, Polycarbonates, and Copolymers

Cited by 4 publications

References 50 publications

Ring‐Opening Copolymerization of Epoxides with Cyclic Anhydrides Promoted by Bimetallic and Monometallic Phenoxy–Imine Aluminum complexes

Ring‐Opening Copolymerization of Epoxides with Cyclic Anhydrides Promoted by Bimetallic and Monometallic Phenoxy–Imine Aluminum complexes

Complexes of the tripodal phosphine ligands PhSi(XPPh₂)₃(X = CH₂, O): synthesis, structure and catalytic activity in the hydroboration of CO₂

Green Polymer Chemistry: Some Recent Developments and Examples

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Combining Sustainable Polymerization Routes for the Preparation of Polyesters, Polycarbonates, and Copolymers

Cited by 4 publications

References 50 publications

Ring‐Opening Copolymerization of Epoxides with Cyclic Anhydrides Promoted by Bimetallic and Monometallic Phenoxy–Imine Aluminum complexes

Ring‐Opening Copolymerization of Epoxides with Cyclic Anhydrides Promoted by Bimetallic and Monometallic Phenoxy–Imine Aluminum complexes

Complexes of the tripodal phosphine ligands PhSi(XPPh2)3(X = CH2, O): synthesis, structure and catalytic activity in the hydroboration of CO2

Green Polymer Chemistry: Some Recent Developments and Examples

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Product

Resources

About

Complexes of the tripodal phosphine ligands PhSi(XPPh₂)₃(X = CH₂, O): synthesis, structure and catalytic activity in the hydroboration of CO₂