Navigation überspringen
Universitätsbibliothek Heidelberg
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Cervantes Reyes, Alejandro [VerfasserIn]   i
 Saxl, Tobias [VerfasserIn]   i
 Stein, Philipp [VerfasserIn]   i
 Rudolph, Matthias [VerfasserIn]   i
 Rominger, Frank [VerfasserIn]   i
 Asiri, Abdullah Mohamed [VerfasserIn]   i
 Hashmi, A. Stephen K. [VerfasserIn]   i
Titel:Expanded ring NHC silver carboxylate complexes as efficient and reusable catalysts for the carboxylative cyclization of unsubstituted propargylic derivatives
Verf.angabe:Alejandro Cervantes-Reyes, Tobias Saxl, Philipp M. Stein, Matthias Rudolph, Frank Rominger, Abdullah M. Asiri, and A. Stephen K. Hashmi
E-Jahr:2021
Jahr:09 March 2021
Umfang:8 S.
Fussnoten:Version of record online: May 3, 2021 ; Gesehen am 08.06.2021
Titel Quelle:Enthalten in: ChemSusChem
Ort Quelle:Weinheim : Wiley-VCH, 2008
Jahr Quelle:2021
Band/Heft Quelle:14(2021), 11, Seite 2367-2374
ISSN Quelle:1864-564X
Abstract:Stabilized by a bulky N-heterocyclic carbene [BPDPr, 1,3-bis(2,6-diisopropylphenyl)-1,3-diazonine-2-ylidene] ligand, new silver carboxylate complexes of the form BPDPrAgO2C-R (R=Me, Ph) have been synthesized and fully characterized in solution and in the solid state and implemented as sole catalysts (base-, additive-, and, in some cases, solvent-free) in the challenging fixation of carbon dioxide to unsubstituted propargylic derivatives for the synthesis of oxazolidinones and α-methylene cyclic carbonates. Derived from X-ray diffraction studies, the molecular geometry and the concept of buried volume were employed to describe the structural and steric features of these silver complexes. Their stability and efficiency as catalysts have been demonstrated by the synthesis of 29 carboxylation products (72-98 % yield) at low catalyst loadings (0.01-1.5 mol%). Characteristics are high turnover numbers (up to 9400), catalyst recyclability (up to 96 % yield after the 7th cycle with no decomposition of the silver complex), and the possibility to scale-up the reaction.
DOI:doi:10.1002/cssc.202002822
URL:kostenfrei: Volltext: https://doi.org/10.1002/cssc.202002822
 kostenfrei: Volltext: https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/cssc.202002822
 DOI: https://doi.org/10.1002/cssc.202002822
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:carbon dioxide
 cyclic carbonates
 N-heterocyclic carbenes
 oxazolidinones
 silver
K10plus-PPN:1760046620
Verknüpfungen:→ Zeitschrift
 
 
Lokale URL UB: Zum Volltext

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/68745920   QR-Code
zum Seitenanfang