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CrystEngComm
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ARTICLE
Journal Name
NH2 and CAU-1-NH2/H. The observed data explain that the CAU-
1-NH2 exhibits high activity and selectivity towards Knoevenagel
condensation product while CAU-10 and CAU-10-NH2 result in a
mixture of products derived through acid and base catalyzed
products namely, acetal and Knoevenagel condensation
products. The available catalytic data clearly establish that the
product selectivity mainly depends on the nature of MOFs and
the reaction occurs within the pores of CAU-1-NH2 as evidenced
from the comparison of molecular dimension of the reactants
with the pores of CAU-1-NH2. In addition CAU-1-NH2 was reused
and no significant change in its activity is observed. PXRD
measurements of the fresh and reused catalyst show no
structural changes and a leaching experiment indicates the
absence of Al3+ thus, proving the catalyst stability under the
present experimental condition. Future work will be aimed to
synthesize CAU-1-H and also the methoxy-free CAU-1-NH2 in
order to fully evaluate the influence of methoxy and amino
groups of the catalysts in Knoevenagel condensation reactions.
DOI: 10.1039/C6CE02664H
Acknowledgements
ADM thanks University Grants Commission, New Delhi for the
award of Assistant Professorship under its Faculty Recharge
Program and also thanks Department of Science and
Technology, India for the financial support through Fast Track
project (SB/FT/CS-166/2013). ADM thanks DFG for the financial
support for three months research stay at University of Kiel,
Germany under INSA-DFG bilateral exchange program.
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