Perfectly Alternating and Regioselective Copolymerization of Carbonyl Sulfide and Epoxides by Metal-Free Lewis Pairs
Publication type: Journal Article
Publication date: 2017-04-26
scimago Q1
wos Q1
SJR: 5.550
CiteScore: 27.6
Impact factor: 16.9
ISSN: 14337851, 15213773
PubMed ID:
28444916
General Chemistry
Catalysis
Abstract
The preparation of perfectly alternating and regioslective copolymers derived from the copolymerization of carbonyl sulfide (COS) and epoxides by metal-free Lewis pair catalysts composed of a Lewis base (amidine, guanidine, or quaternary onium salts) and a Lewis acid (triethyl borane) is described. Colorless and highly transparent copolymers of poly(monothiocarbonate) were successfully obtained with over 99 % tail-to-head content and high molecular weight (up to 92.5 kg mol-1 ). In most instances, oxygen-sulfur exchange reactions (O/S ERs), which would generate random thiocarbonate and carbonate units, were effectively suppressed. The turnover frequencies (TOF) of these Lewis pair catalyzed processes were as high as 119 h-1 at ambient temperature.
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GOST
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Yang J. L. et al. Perfectly Alternating and Regioselective Copolymerization of Carbonyl Sulfide and Epoxides by Metal-Free Lewis Pairs // Angewandte Chemie - International Edition. 2017. Vol. 56. No. 21. pp. 5774-5779.
GOST all authors (up to 50)
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Yang J. L., Wu H. L., Li Y., Zhang X., Darensbourg D. J. Perfectly Alternating and Regioselective Copolymerization of Carbonyl Sulfide and Epoxides by Metal-Free Lewis Pairs // Angewandte Chemie - International Edition. 2017. Vol. 56. No. 21. pp. 5774-5779.
Cite this
RIS
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TY - JOUR
DO - 10.1002/anie.201701780
UR - https://doi.org/10.1002/anie.201701780
TI - Perfectly Alternating and Regioselective Copolymerization of Carbonyl Sulfide and Epoxides by Metal-Free Lewis Pairs
T2 - Angewandte Chemie - International Edition
AU - Yang, Jia Liang
AU - Wu, Hai Lin
AU - Li, Yang
AU - Zhang, Xinghong
AU - Darensbourg, Donald J.
PY - 2017
DA - 2017/04/26
PB - Wiley
SP - 5774-5779
IS - 21
VL - 56
PMID - 28444916
SN - 1433-7851
SN - 1521-3773
ER -
Cite this
BibTex (up to 50 authors)
Copy
@article{2017_Yang,
author = {Jia Liang Yang and Hai Lin Wu and Yang Li and Xinghong Zhang and Donald J. Darensbourg},
title = {Perfectly Alternating and Regioselective Copolymerization of Carbonyl Sulfide and Epoxides by Metal-Free Lewis Pairs},
journal = {Angewandte Chemie - International Edition},
year = {2017},
volume = {56},
publisher = {Wiley},
month = {apr},
url = {https://doi.org/10.1002/anie.201701780},
number = {21},
pages = {5774--5779},
doi = {10.1002/anie.201701780}
}
Cite this
MLA
Copy
Yang, Jia Liang, et al. “Perfectly Alternating and Regioselective Copolymerization of Carbonyl Sulfide and Epoxides by Metal-Free Lewis Pairs.” Angewandte Chemie - International Edition, vol. 56, no. 21, Apr. 2017, pp. 5774-5779. https://doi.org/10.1002/anie.201701780.