Manganese catalysed dehydrogenative synthesis of polyureas from diformamide and diamines.

Autor: McLuskie A; School of Chemistry, University of St. Andrews North Haugh St. Andrews KY169ST UK ak336@st-andrews.ac.uk., Brodie CN; School of Chemistry, University of St. Andrews North Haugh St. Andrews KY169ST UK ak336@st-andrews.ac.uk., Tricarico M; Department of Engineering Science, University of Oxford Parks Road Oxford OX13PJ UK jin-chong.tan@eng.ox.ac.uk., Gao C; School of Chemistry, University of St. Andrews North Haugh St. Andrews KY169ST UK ak336@st-andrews.ac.uk., Peters G; School of Chemistry, University of St. Andrews North Haugh St. Andrews KY169ST UK ak336@st-andrews.ac.uk., Naden AB; School of Chemistry, University of St. Andrews North Haugh St. Andrews KY169ST UK ak336@st-andrews.ac.uk., Mackay CL; School of Chemistry, University of Edinburgh EH93FJ UK., Tan JC; Department of Engineering Science, University of Oxford Parks Road Oxford OX13PJ UK jin-chong.tan@eng.ox.ac.uk., Kumar A; School of Chemistry, University of St. Andrews North Haugh St. Andrews KY169ST UK ak336@st-andrews.ac.uk.
Jazyk: angličtina
Zdroj: Catalysis science & technology [Catal Sci Technol] 2023 May 15; Vol. 13 (12), pp. 3551-3557. Date of Electronic Publication: 2023 May 15 (Print Publication: 2023).
DOI: 10.1039/d3cy00284e
Abstrakt: We report here the synthesis of polyureas from the dehydrogenative coupling of diamines and diformamides. The reaction is catalysed by a manganese pincer complex and releases H 2 gas as the only by-product making the process atom-economic and sustainable. The reported method is greener in comparison to the current state-of-the-art production routes that involve diisocyanate and phosgene feedstock. We also report here the physical, morphological, and mechanical properties of synthesized polyureas. Based on our mechanistic studies, we suggest that the reaction proceeds via isocyanate intermediates formed by the manganese catalysed dehydrogenation of formamides.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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