Jiyun Hu1, Federica Zanca2, Patricia Lambe1, Miu Tsuji1, Samantha Wijeweera1, Stefano Todisco3, Piero Mastrorilli3, William Shirley4, Mourad Benamara5, Peyman Z Moghadam2, M Hassan Beyzavi1. 1. Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States. 2. Department of Chemical and Biological Engineering, The University of Sheffield, Sheffield S13JD, United Kingdom. 3. DICATECh, Politecnico di Bari, Bari I-70125, Italy. 4. Department of Chemistry, Pittsburg State University, Pittsburg, Kansas 66762, United States. 5. Institute for Nanoscience & Engineering, University of Arkansas, Fayetteville, Arkansas 72701, United States.
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.
Two-dimensional urea- and n class="Chemical">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.
Authors: Cameron H Feriante; Samik Jhulki; Austin M Evans; Raghunath R Dasari; Kaitlin Slicker; William R Dichtel; Seth R Marder Journal: Adv Mater Date: 2019-11-25 Impact factor: 30.849
Authors: Michio Matsumoto; Raghunath R Dasari; Woojung Ji; Cameron H Feriante; Timothy C Parker; Seth R Marder; William R Dichtel Journal: J Am Chem Soc Date: 2017-04-04 Impact factor: 15.419
Authors: Nazzareno Galié; David Badesch; Ronald Oudiz; Gérald Simonneau; Michael D McGoon; Anne M Keogh; Adaani E Frost; Diane Zwicke; Robert Naeije; Shelley Shapiro; Horst Olschewski; Lewis J Rubin Journal: J Am Coll Cardiol Date: 2005-08-02 Impact factor: 24.094