Expanding the Scope of Metal-Free Catalytic Hydrogenation through Frustrated Lewis Pair Design
作者:Gábor Erős、Hasan Mehdi、Imre Pápai、Tibor András Rokob、Péter Király、Gábor Tárkányi、Tibor Soós
DOI:10.1002/anie.201001518
日期:2010.9.3
No metal causes frustration: Based on a conceptual framework, novel frustratedLewis acid–base catalyst systems with orthogonal reactivity have been developed. Aside from enhanced functional‐group tolerance, unique chemoselectivity can be achieved in catalytic metal‐free hydrogenations (see scheme).
Sulfonic peracids — III. Heteroatom oxidation and chemoselectivity
作者:R. Kluge、M. Schulz、S. Liebsch
DOI:10.1016/0040-4020(96)00202-5
日期:1996.4
investigated thep-toluenesulfonic peracid (2) generated in situ in the oxidation of different types of compounds containing nitrogen and/or sulfur. The sulfonic peracid2 shows a remarkable chemoselectivity characterized by a preferred oxidation of sulfides to the sulfones in the presence of amines or olefins and a strong dependence on the nature of the amine in the competitive oxidation of olefins and amines.
Photocatalytic aerobic oxidation of amines to imines on BiVO<sub>4</sub> under visible light irradiation
作者:Bo Yuan、Ruifeng Chong、Bao Zhang、Jun Li、Yan Liu、Can Li
DOI:10.1039/c4cc07097f
日期:——
BiVO4 was found to be an efficient photocatalystundervisiblelight irradiation for selectiveoxidation of amines to imines with high activity (99% conversion) and selectivity (up to 99%) using oxygen as an oxidant.
Well-defined BiOCl colloidal ultrathin nanosheets: synthesis, characterization, and application in photocatalytic aerobic oxidation of secondary amines
作者:Yihui Wu、Bo Yuan、Mingrun Li、Wen-Hua Zhang、Yan Liu、Can Li
DOI:10.1039/c4sc03229b
日期:——
Well-defined BiOCl ultrathin nanosheets were prepared by a facile colloidal route, and exhibit high photocatalytic performance toward the oxidation of secondary amines to corresponding imines under visible irradiation.
The efficient catalytic reduction of imines with phenylsilane is achieved by using the potassium, calcium and strontium based catalysts [(DMAT)K (THF)]∞ , (DMAT)2Ca⋅(THF)2 and (DMAT)2 Sr⋅(THF)2 (DMAT=2-dimethylamino-α-trimethylsilylbenzyl). Eight different aldimines and the ketimine Ph2 C=NPh could be successfully reduced by PhSiH3 at temperatures between 25-60 °C with catalyst loadings down to 2