Indirect reduction of CO2 and recycling of polymers by manganese-catalyzed transfer hydrogenation of amides, carbamates, urea derivatives, and polyurethanes

dc.bibliographicCitation.firstPage10590eng
dc.bibliographicCitation.issue31eng
dc.bibliographicCitation.journalTitleChemical Scienceeng
dc.bibliographicCitation.lastPage10597eng
dc.bibliographicCitation.volume12eng
dc.contributor.authorLiu, Xin
dc.contributor.authorWerner, Thomas
dc.date.accessioned2022-05-04T09:46:38Z
dc.date.available2022-05-04T09:46:38Z
dc.date.issued2021
dc.description.abstractThe reduction of polar bonds, in particular carbonyl groups, is of fundamental importance in organic chemistry and biology. Herein, we report a manganese pincer complex as a versatile catalyst for the transfer hydrogenation of amides, carbamates, urea derivatives, and even polyurethanes leading to the corresponding alcohols, amines, and methanol as products. Since these compound classes can be prepared using CO2as a C1 building block the reported reaction represents an approach to the indirect reduction of CO2. Notably, these are the first examples on the reduction of carbamates and urea derivatives as well as on the C-N bond cleavage in amides by transfer hydrogenation. The general applicability of this methodology is highlighted by the successful reduction of 12 urea derivatives, 26 carbamates and 11 amides. The corresponding amines, alcohols and methanol were obtained in good to excellent yields up to 97%. Furthermore, polyurethanes were successfully converted which represents a viable strategy towards a circular economy. Based on control experiments and the observed intermediates a feasible mechanism is proposed. © The Royal Society of Chemistry 2021.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/8844
dc.identifier.urihttps://doi.org/10.34657/7882
dc.language.isoengeng
dc.publisherCambridge : RSCeng
dc.relation.doihttps://doi.org/10.1039/d1sc02663a
dc.relation.essn2041-6539
dc.relation.issn2041-6520
dc.rights.licenseCC BY-NC 3.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by-nc/3.0/eng
dc.subject.ddc540eng
dc.subject.otherChemical bondseng
dc.subject.otherHydrogenationeng
dc.subject.otherMetabolismeng
dc.subject.otherMethanoleng
dc.subject.otherPolyurethaneseng
dc.subject.otherReductioneng
dc.subject.otherUreaeng
dc.subject.otherBuilding blockeseng
dc.subject.otherC-N bond cleavageseng
dc.subject.otherCircular economyeng
dc.subject.otherControl experimentseng
dc.subject.otherIndirect reductioneng
dc.subject.otherOrganic Chemistryeng
dc.subject.otherPincer complexeseng
dc.subject.otherTransfer hydrogenationseng
dc.subject.otherManganese compoundseng
dc.titleIndirect reduction of CO2 and recycling of polymers by manganese-catalyzed transfer hydrogenation of amides, carbamates, urea derivatives, and polyurethaneseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorLIKATeng
wgl.subjectChemieeng
wgl.typeZeitschriftenartikeleng
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