WebJun 8, 2011 · Abstract [Ru 3 (CO) 12 ]-catalyzed transfer semihydrogenation of various functionalized diaryl alkynes with N, N -dimethylformamide (DMF) and water as hydrogen source affords cis - and trans -stilbenes. The stereodivergent approach can be switched by the use of acetic (HOAc) or trifluoroacetic (TFA) acid as additives. WebMar 25, 2014 · Semihydrogenation occurred much faster in alkynes conjugated with one phenyl group (Table 2, entries 1 and 2) than in substrates conjugated with two phenyl groups (entry 3). Several functional groups on the conjugated phenyl ring …
Facile synthesis of N-doped graphene encapsulated Ni@N/C …
Web[6] Ying Gao#, Rong Yang#, Changhong Wang#(共同一作), Cuibo Liu, Yongmeng Wu, Huizhi Li, Bin Zhang*, Field-induced reagent concentration and sulfur adsorption enable efficient electrocatalytic semihydrogenation of alkynes. Science Advances, 2024, 8, eabm9477. WebMar 24, 2024 · A base-assisted metal species modulation mechanism enables Ni-catalyzed stereodivergent transfer semihydrogenation of alkynes with water, delivering both olefinic isomers smoothly using cheap and... haunted penitentiary ohio
Alkyne semi-hydrogenation catalyzed by 1. DFT calculated barriers …
WebJan 24, 2024 · Abstract A ligand-controlled iridium-catalyzed semihydrogenation of alkynes to E - and Z -alkenes with ethanol was developed. Effective selectivity control was achieved by ligand regulation. The use of 1,2-bis (diphenylphosphino)ethane (DPPE) and 1,5-cyclooctadiene (COD) was critical for the stereoselective semihydrogenation of alkynes. WebApr 14, 2024 · Cu-based catalysts for the conversion of C2H2 to C2H4 are plagued by side reactions. Here, Cu nanodots for C2H2 semihydrogenation are reported to reach current densities >400 mA cm−2 and ... WebEfficient electrocatalytic alkyne semihydrogenation with potential/time-independent selectivity and Faradaic efficiency (FE) is vital for industrial alkene productions. Here, sulfur-tuned effects a... borchers timothy