期刊
TETRAHEDRON LETTERS
卷 49, 期 46, 页码 6589-6592出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2008.09.035
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资金
- Fok Ying Tung Education Foundation [104023]
- New Century Excellent Talents in University [NCET-05-0277]
- Outstanding Young Scientist Foundation of NSFC [20625414]
A catalyst system containing an electrophilic center and a sterically hindered nUcleophilic center in one molecule was applied to the cycloaddition reaction of CO2 and epoxides. This intramolecularly two-centered cooperation catalyst showed activity even at a high [epoxide]/[catalyst] ratio up to 50000 under mild conditions such as solvent-free, ambient temperature, and low CO2 pressure. The reaction of CO2 with (S)-propylene oxide at 80 degrees C in the presence of the bifunctional catalyst gives (S)-propylene carbonate in 96% ee with retention of stereochemistry. (C) 2008 Elsevier Ltd. All rights reserved,
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