Zwitterionic bis(phenolate) amine lanthanide complexes for the ring-opening polymerisation of cyclic esters

Hellen E. Dyer; Saskia Huijser; Andrew D. Schwarz; Chao Wang; Robbert Duchateau; Philip Mountford

doi:10.1039/b714583g

Zwitterionic bis(phenolate) amine lanthanide complexes for the ring-opening polymerisation of cyclic esters

Hellen E. Dyer^*, Saskia Huijser, Andrew D. Schwarz, Chao Wang, Robbert Duchateau, Philip Mountford

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

90 Citations (Scopus)

Abstract

The reaction of Sm{N(SiMe3)(2)}(3) with the bis(phenol) amines H2O2NR (H2O2NR = RCH2CH2N(2-HO-3,5-C6H2t Bu-2)(2); R = OMe, NMe2 or Me) gave exclusively zwitterions Sm(O2NR)- (HO2NR). For R= OMe or NMe2 these were efficient catalysts for the ring-opening polymerisation of epsilon-caprolactone and D,L-lactide with a tendency to form cyclic esters; in contrast, no polymerisation was observed for R = Me.

Original language	English
Pages (from-to)	32-35
Number of pages	4
Journal	Dalton Transactions
Volume	2008
Issue number	1
DOIs	https://doi.org/10.1039/b714583g
Publication status	Published - 2008
Externally published	Yes

Keywords

METAL-COMPLEXES
LACTIDE POLYMERIZATION
EPSILON-CAPROLACTONE
DONOR LIGANDS
ORGANOCATALYSTS
CATALYSTS
TITANIUM

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Zwitterionic bis(phenolate)amine lanthanide complexes for the ring-opening polymerisation of cyclic esters
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title = "Zwitterionic bis(phenolate) amine lanthanide complexes for the ring-opening polymerisation of cyclic esters",

abstract = "The reaction of Sm{N(SiMe3)(2)}(3) with the bis(phenol) amines H2O2NR (H2O2NR = RCH2CH2N(2-HO-3,5-C6H2t Bu-2)(2); R = OMe, NMe2 or Me) gave exclusively zwitterions Sm(O2NR)- (HO2NR). For R= OMe or NMe2 these were efficient catalysts for the ring-opening polymerisation of epsilon-caprolactone and D,L-lactide with a tendency to form cyclic esters; in contrast, no polymerisation was observed for R = Me.",

keywords = "METAL-COMPLEXES, LACTIDE POLYMERIZATION, EPSILON-CAPROLACTONE, DONOR LIGANDS, ORGANOCATALYSTS, CATALYSTS, TITANIUM",

author = "Dyer, {Hellen E.} and Saskia Huijser and Schwarz, {Andrew D.} and Chao Wang and Robbert Duchateau and Philip Mountford",

year = "2008",

doi = "10.1039/b714583g",

language = "English",

volume = "2008",

pages = "32--35",

journal = "Dalton Transactions",

issn = "1477-9226",

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number = "1",

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TY - JOUR

T1 - Zwitterionic bis(phenolate) amine lanthanide complexes for the ring-opening polymerisation of cyclic esters

AU - Dyer, Hellen E.

AU - Huijser, Saskia

AU - Schwarz, Andrew D.

AU - Wang, Chao

AU - Duchateau, Robbert

AU - Mountford, Philip

PY - 2008

Y1 - 2008

N2 - The reaction of Sm{N(SiMe3)(2)}(3) with the bis(phenol) amines H2O2NR (H2O2NR = RCH2CH2N(2-HO-3,5-C6H2t Bu-2)(2); R = OMe, NMe2 or Me) gave exclusively zwitterions Sm(O2NR)- (HO2NR). For R= OMe or NMe2 these were efficient catalysts for the ring-opening polymerisation of epsilon-caprolactone and D,L-lactide with a tendency to form cyclic esters; in contrast, no polymerisation was observed for R = Me.

AB - The reaction of Sm{N(SiMe3)(2)}(3) with the bis(phenol) amines H2O2NR (H2O2NR = RCH2CH2N(2-HO-3,5-C6H2t Bu-2)(2); R = OMe, NMe2 or Me) gave exclusively zwitterions Sm(O2NR)- (HO2NR). For R= OMe or NMe2 these were efficient catalysts for the ring-opening polymerisation of epsilon-caprolactone and D,L-lactide with a tendency to form cyclic esters; in contrast, no polymerisation was observed for R = Me.

KW - METAL-COMPLEXES

KW - LACTIDE POLYMERIZATION

KW - EPSILON-CAPROLACTONE

KW - DONOR LIGANDS

KW - ORGANOCATALYSTS

KW - CATALYSTS

KW - TITANIUM

U2 - 10.1039/b714583g

DO - 10.1039/b714583g

M3 - Article

SN - 1477-9226

VL - 2008

SP - 32

EP - 35

JO - Dalton Transactions

JF - Dalton Transactions

IS - 1

ER -

Zwitterionic bis(phenolate) amine lanthanide complexes for the ring-opening polymerisation of cyclic esters

Abstract

Keywords

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