(Thio)urea-Based Covalent Organic Framework as a Hydrogen-Bond-Donating Catalyst.
ACS Appl Mater Interfaces
; 12(26): 29212-29217, 2020 07 01.
Article
em En
| MEDLINE
| ID: mdl-32511903
ABSTRACT
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.
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MEDLINE
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En
Ano de publicação:
2020
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Article