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


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.

SUBMITTER: Hu J 

PROVIDER: S-EPMC7815320 | biostudies-literature |

REPOSITORIES: biostudies-literature

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