Ruthenium-Catalyzed Coupling Reactions of CO2 with C2 H4 and Hydrosilanes towards Silyl Esters.
Chemistry
; 27(12): 3997-4003, 2021 Feb 24.
Article
en En
| MEDLINE
| ID: mdl-33378130
ABSTRACT
A series of in situ-prepared catalytic systems incorporating RuII precursors and bidentate phosphine ligands has been probed in the reductive carboxylation of ethylene in the presence of triethylsilane as reductant. The catalytic production of propionate and acrylate silyl esters was evidenced by high-throughput screening (HTS) and implemented in batch reactor techniques. The most promising catalyst systems identified were made of Ru(H)(Cl)(CO)(PPh3 )3 and 1,4-bis(dicyclohexylphosphino)butane (DCPB) or 1,1'-ferrocene-diyl-bis(cyclohexylphosphine) (DCPF). A marked influence of water on the acrylate/propionate selectivity was noted. Turnover numbers [mol mol(Ru)-1 ] up to 16 for acrylate and up to 68 for propionate were reached under relatively mild conditions (20â
bar, 100 °C, 0.5â
mol % Ru, 40â
mol % H2 O vs. HSiEt3 ). Possible mechanisms are discussed.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Chemistry
Asunto de la revista:
QUIMICA
Año:
2021
Tipo del documento:
Article
País de afiliación:
Francia