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New Journal of Chemistry
Page 4 of 5
DOI: 10.1039/C6NJ03899A
COMMUNICATION
Journal Name
5023; d) S. Mondal, J. Mondal and A. Bhaumik, ChemCatChem,
2015, , 3570-3578.
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stability of CarPy-CMP@Ru as an efficient heterogeneous
catalyst.
7
Other cyclic secondary amines such as 4-methylpiperidine,
pyrrolidine and piperidine were also converted into
thecorresponding formamides in the presence of CO2/H2 with
90~93% yields under the optimized conditions (Table 2, entries
2~4). Other dialkylamine, such as dipropylamine, led to the
formylation product in 89% yield (entry 5).
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,
a
Table 2 Formylation of amines catalyzed by Car-CMP-1@Ru in the presence of CO2/H2
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Entry
1
Substrates
Products
Yields/%b
91
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93
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5
a
Reaction conditions: amine 1 mmol, catalyst loading 0.5 mol% Ru based on
amine, MeOH 3 mL, CO2 pressure 4 MPa, total pressure (CO2 + H2) 8 MPa, 130 oC,
24 h. b Isolated yield.
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Pyridine-functionalized porous organic polymers showed
excellent CO2 uptake capacity as well as good support for Ru(0)
nanoparticles. The supported Ru nanocatalyst with uniform
pore size distribution and the hierarchically porous structure
served as efficient catalyst for the formylation of amines with
CO2/H2, together with high product yields, high stability and
easy recyclability. Its excellent performance for CO2 conversion
was ascribed to the joint effect of the polymeric support and
the Ru nanoparticles. The polymer served as the support for
Ru nanoparticles, meanwhile it could capture CO2 due to the
CO2-philic nature of pyridine functionality and hierarchically
porosity, as well as activate amines through hydrogen bonding
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Acknowledgements
This work was financially supported by the National Natural
Science Foundation of China (grant no. 21402208, 21533011,
21125314).
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Notes and references
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4 | J. Name., 2012, 00, 1-3
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