(Thio)urea-Based Covalent Organic Framework as a Hydrogen-Bond-Donating Catalyst

by Hu, Jiyun; Zanca, Federica; Lambe, Patricia; Tsuji, Miu; Wijeweera, Samantha; Todisco, Stefano; Mastrorilli, Piero; Shirley, William; Benamara, Mourad; Moghadam, Peyman Z.; Beyzavi, M. Hassan

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Two-dimensional urea- and thiourea-containing covalent organic frameworks (COFs) were synthesized at ambient conditions at large scale within 1 h in the absence of an acid catalyst. The site-isolated urea and thiourea in the COF showed enhanced catalytic efficiency as a hydrogen-bond-donating organocatalyst compared to the molecular counterparts in epoxide ring-opening reaction, aldehyde acetalization, and Friedel-Crafts reaction. The COF catalysts also had excellent recyclability.

Journal
ACS Applied Materials and Interfaces
Volume
12
Issue
26
Year
2020
Start Page
29212
ISBN/ISSN
1944-8244; 1944-8252
PMID
32511903
DOI
10.1021/acsami.0c04957