Journal of the American Chemical Society, volume 132, issue 46, pages 16520-16525
Enantioselective Epoxide Polymerization Using a Bimetallic Cobalt Catalyst
Publication type: Journal Article
Publication date: 2010-11-02
Q1
Q1
SJR: 5.489
CiteScore: 24.4
Impact factor: 14.4
ISSN: 00027863, 15205126
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
A highly active enantiopure bimetallic cobalt complex was explored for the enantioselective polymerization of a variety of monosubstituted epoxides. The polymerizations were optimized for high rates and stereoselectivity, with s-factors (k(fast)/k(slow)) for most epoxides exceeding 50 and some exceeding 300, well above the threshold for preparative utility of enantiopure epoxides and isotactic polyethers. Values for mm triads of the resulting polymers are typically greater than 95%, with some even surpassing 98%. In addition, the use of a racemic catalyst allowed the preparation of isotactic polyethers in quantitative yields. The thermal properties of these isotactic polyethers are presented, with many polymers exhibiting high T(m) values. This is the first report of the rapid synthesis of a broad range of highly isotactic polyethers via the enantioselective polymerization of racemic epoxides.
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Thomas R. M. et al. Enantioselective Epoxide Polymerization Using a Bimetallic Cobalt Catalyst // Journal of the American Chemical Society. 2010. Vol. 132. No. 46. pp. 16520-16525.
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Thomas R. M., Widger P. C. B., Ahmed S. M., Jeske R. C., Hirahata W., Lobkovsky E. B., Coates G. W. Enantioselective Epoxide Polymerization Using a Bimetallic Cobalt Catalyst // Journal of the American Chemical Society. 2010. Vol. 132. No. 46. pp. 16520-16525.
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TY - JOUR
DO - 10.1021/ja1058422
UR - https://doi.org/10.1021/ja1058422
TI - Enantioselective Epoxide Polymerization Using a Bimetallic Cobalt Catalyst
T2 - Journal of the American Chemical Society
AU - Thomas, Renee M
AU - Widger, Peter C B
AU - Ahmed, Syud M
AU - Jeske, Ryan C
AU - Hirahata, Wataru
AU - Lobkovsky, Emil B.
AU - Coates, Geoffrey W.
PY - 2010
DA - 2010/11/02
PB - American Chemical Society (ACS)
SP - 16520-16525
IS - 46
VL - 132
SN - 0002-7863
SN - 1520-5126
ER -
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@article{2010_Thomas,
author = {Renee M Thomas and Peter C B Widger and Syud M Ahmed and Ryan C Jeske and Wataru Hirahata and Emil B. Lobkovsky and Geoffrey W. Coates},
title = {Enantioselective Epoxide Polymerization Using a Bimetallic Cobalt Catalyst},
journal = {Journal of the American Chemical Society},
year = {2010},
volume = {132},
publisher = {American Chemical Society (ACS)},
month = {nov},
url = {https://doi.org/10.1021/ja1058422},
number = {46},
pages = {16520--16525},
doi = {10.1021/ja1058422}
}
Cite this
MLA
Copy
Thomas, Renee M., et al. “Enantioselective Epoxide Polymerization Using a Bimetallic Cobalt Catalyst.” Journal of the American Chemical Society, vol. 132, no. 46, Nov. 2010, pp. 16520-16525. https://doi.org/10.1021/ja1058422.