Observation of guanidine–carbon dioxide complexation in solution and its role in the reaction of carbon dioxide and propargylamines

The first observation of guanidine–CO 2 ‘activation’ complexes in solution using ATR-FTIR is reported. While cyclic guanidines TBD and MTBD form stable and detectable complexes with CO 2 , other guanidines and tertiary amines do not. Correlation with the catalytic activity of these amines/guanidines...

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Bibliographic Details
Published in:Catalysis science & technology 2014-01, Vol.4 (10), p.3458-3462
Main Authors: Nicholls, Rachel, Kaufhold, Simon, Nguyen, Bao N.
Format: Article
Language:English
Subjects:
Activation
Amines
Basicity
Carbon dioxide
Catalytic activity
Complexation
Guanidines
Origins
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Summary:The first observation of guanidine–CO 2 ‘activation’ complexes in solution using ATR-FTIR is reported. While cyclic guanidines TBD and MTBD form stable and detectable complexes with CO 2 , other guanidines and tertiary amines do not. Correlation with the catalytic activity of these amines/guanidines in the reaction between CO 2 and propargylamines indicated that the basicity of the catalyst, rather than its ability to form complexes with CO 2 , is the origin of catalytic activity.
ISSN:2044-4753
2044-4761
DOI:10.1039/C4CY00480A