Nanolayered cobalt–molybdenum sulphides (Co–Mo–S) catalyse borrowing hydrogen C–S bond formation reactions of thiols or H<sub>2</sub>S with alcohols
作者:Iván Sorribes、Avelino Corma
DOI:10.1039/c8sc05782f
日期:——
Nanolayered cobalt–molybdenum sulphide (Co–Mo–S) materials have been established as excellent catalysts for C–S bond construction. These catalysts allow for the preparation of a broad range of thioethers in good to excellent yields from structurally diverse thiols and readily available primary as well as secondary alcohols. Chemoselectivity in the presence of sensitive groups such as double bonds,
On the Functional Group Tolerance of Ester Hydrogenation and Polyester Depolymerisation Catalysed by Ruthenium Complexes of Tridentate Aminophosphine Ligands
作者:José A. Fuentes、Samuel M. Smith、M. Theresa Scharbert、Ian Carpenter、David B. Cordes、Alexandra M. Z. Slawin、Matthew L. Clarke
DOI:10.1002/chem.201500907
日期:2015.7.20
ruthenium(II) complexes are reported. Five of these were characterised by X‐ray crystallography. The activities of this collection of catalysts were initially compared for the hydrogenation of two model ester hydrogenations. Catalyst turnover frequencies up to 2400 h−1 were observed at 85 °C. However, turnover is slow at near ambient temperatures. By using a phosphine‐diamine RuII complex, identified
A novel series of benzoylsulfonamide derivatives were synthesized and biologically evaluated. Among them, 4-(biphenyl-4-ylmethylsulfanylmethyl)-N-(hexane-1-sulfonyl)benzamide (compound 18K) was identified as a proteintyrosinephosphatase 1B (PTP1B) inhibitor with potent and selective inhibitory activity against PTP1B (IC50=0.25 µM). Compound 18K functioned as a non-competitive inhibitor and bound
Palladium(II)-catalyzed Heck reaction of aryl halides and arylboronic acids with olefins under mild conditions
作者:Tanveer Mahamadali Shaikh、Fung-E Hong
DOI:10.3762/bjoc.9.180
日期:——
A series of general and selective Pd(II)-catalyzedHeckreactions were investigated under mild reaction conditions. The first protocol has been developed employing an imidazole-based secondary phosphine oxide (SPO) ligated palladium complex (6) as a precatalyst. The catalytic coupling of aryl halides and olefins led to the formation of the corresponding coupled products in excellent yields. A variety
Multistep organic reaction of C−C cross-coupling and alcoholoxidation is achieved on the heterogeneous surface of CeO2-supported Pd catalyst. Atomic-level imaging and spectroscopic studies reveal that metallic Pd0 and Pd−CeO2 interface are the activesites for C−C cross-coupling and alcoholoxidation, respectively. Furthermore, these activesites on Pd−CeO2 were effectively controlled by reductive heat-treatment