Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 6, Issue 9, Pages 11228-11234Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b03245
Keywords
Transformation of carbon dioxide; Lecithin; C-N bond construction; Formylation and methylation; Renewable organocatalyst
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Funding
- National Key Research and Development Program of China [2017YFA0403003]
- National Natural Science Foundation of China [21733011, 21673249]
- Key Research Program of Frontier Sciences of CAS [QYZDY-SSW-SLH013]
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2017043]
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Transformation of carbon dioxide (CO2) into valuable chemicals is of great importance, and development of novel and efficient catalysts is crucial. Herein, we found that the renewable lecithin could be used as an efficient organocatalyst for the formylation and methylation of various amines with CO2 to corresponding formamides and methylamines via the construction of new C-N bonds using PhSiH3 as the hydrogen source, and satisfactory yields could be obtained. More importantly, the selectivity of the products could be easily controlled by the molar ratio of reactants (i.e., CO2, amines, and PhSiH3) and reaction temperature. In the catalytic cycle, formamides and methylamines were generated by converting the carbon (+4) in CO2 into +2 and -2 via 2-electron and 6-electron reduction pathway, respectively.
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