PleaseC dh oe mn oi ct a al dS cj ui es nt cme argins
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ARTICLE
Journal Name
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transfer for efficient reduction of the α-bromocarbonyl
substrate and α-amino radical.
Harlander, S. Kümmel, S. Dankesreiter, A. Pfitzner, K.
DOI: 10.1039/C9SC04882K
Zeitler, and B. König, Angew. Chem. Int. Ed., 2012, 51,
4
062-4066; (b) P. Riente, A. M. Adams, J. Albero, E.
Palomares, and M. A. Pericàs, Angew. Chem. Int. Ed., 2014,
3, 9613-9616.
(a) J. Liang, Z. B. Liang, R. Q. Zou, and Y. L. Zhao, Adv.
Mater., 2017, 29, 1701139-1701159; (b) Y. Liu, W. Xuan,
and Y. Cui, Adv. Mater., 2010, 22, 4112-4135.
Conclusions
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We have designed and synthesized a pair of twofold
interpenetrated 3D COFs with the ffc topology through
condensation of square and trigonal building blocks by imine
linkages. The structure assignment was supported by PXRD
analyses, modeling study, the pore size distribution and dye-
uptake experimental data. The 3D COFs were shown to be
efficient photocatalysts for the asymmetric α-alkylation of
aldehydes as well as CDC reaction integrating with a MacMillan
imidazolidinone as the chiral catalyst through visible-light-
driven. The observed enantioselectivities are comparable to
those of reported reactions using molecular metal complexes
or organic dyes as photosensitizers. The COF materials that
lost crystalline after catalysis can be readily recrystallized and
reused without performance loss. This work thus paves the
way for future applications of COFs in visible-light-driven
photoredox asymmetric catalysis and will promote the design
of more 3D COFs with novel topologies and functions.
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837-1846; (c) R. S. Sprick, J.-X. Jiang, B. Bonillo, S. Ren, T.
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Conflicts of interest
There are no conflicts to declare.
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795-8824.
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2. (a) P. -F. Wei, M. -Z. Qi, Z. Wang, S. Ding, W. Yu, Q. Liu, L.
Wang, H. Wang, W. An, and W. Wang, J. Am. Chem. Soc.,
2
018, 140, 4623-4631; (b) R. Chen, J. -L Shi, Y. Ma, G. Lin, X.
Acknowledgements
This work was financially supported by the National Science
Foundation of China (Grants 21431004, 21620102001,
Lang, and C. Wang, Angew. Chem. Int. Ed., 2019, 58, 6430–
434; (c) M. Bhadra, S. Kandambeth, M. K. Sahoo, M.
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Addicoat, E. Balaraman, and R. Banerjee, J Am. Chem. Soc.,
2019, 141, 6152-6156; (d) S. Yang, W. Hu, X. Zhang, P. He,
B. Pattengale, C. Liu, M. Cendejas, I. Hermans, X. Zhang, J.
Zhang, and J. Huang, J. Am. Chem. Soc., 2018, 140, 14614-
2
1875136 and 91856204), and Key Project of Basic Research of
Shanghai (17JC1403100 and 18JC1413200).
1
4618; (e) X. Wangꢀ, L. Chen, S. Y. Chong, M. A. ꢀLittle, Y.
Wu, W. -H. Zhu, R. Clowes, Y. Yan, M. A. Zwijnenburg, R. S.
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