Journalartikel

Jahr der Veröffentlichung: 2016

Seiten: 2269-2272

Zeitschrift: Chemistry-Sustainability-Energy-Materials

Bandnummer: 9

Heftnummer: 16

DOI Link: https://doi.org/10.1002/cssc.201600778

Verlag: Wiley

Abstract: 

The aminolysis of (poly)carbonates by (poly)amines provides access to
non‐isocyanate polyurethanes (NIPUs) that are toxic‐reagent‐free
analogues of polyurethanes (PUs). Owing to their low reactivity, the
ring opening of cyclic carbonates requires the use of a catalyst.
Herein, we report that the more available and cheaper ureas could
advantageously be used for catalyzing the formation of NIPUs at the
expense of the thiourea analogues. In addition, we demonstrate a
medium‐range pK_a of the (thio)urea and an unqeual substitution pattern is critical for controlling the efficiency of the carbonate opening.

Harvard-Zitierstil: Blain, M., Yau, H., Jean-Gerard, L., Auvergne, R., Benazet, D., Schreiner, P., et al. (2016) Urea‐ and Thiourea‐Catalyzed Aminolysis of Carbonates, Chemistry-Sustainability-Energy-Materials, 9(16), pp. 2269-2272. https://doi.org/10.1002/cssc.201600778

APA-Zitierstil: Blain, M., Yau, H., Jean-Gerard, L., Auvergne, R., Benazet, D., Schreiner, P., Caillol, S., & Andrioletti, B. (2016). Urea‐ and Thiourea‐Catalyzed Aminolysis of Carbonates. Chemistry-Sustainability-Energy-Materials. 9(16), 2269-2272. https://doi.org/10.1002/cssc.201600778