Selective Aerobic Oxidation of Csp3-H Bonds Catalyzed by Yeast-Derived Nitrogen, Phosphorus, and Oxygen Codoped Carbon Materials was written by Ju, Zhao-Yang;Song, Li-Na;Chong, Ming-Ben;Cheng, Dang-Guo;Hou, Yang;Zhang, Xi-Ming;Zhang, Qing-Hua;Ren, Lan-Hui. And the article was included in Journal of Organic Chemistry in 2022.HPLC of Formula: 91-02-1 This article mentions the following:
Nitrogen, phosphorus and oxygen codoped carbon catalysts were successfully synthesized using dried yeast powder as pyrolysis precursor. The yeast-derived heteroatom-doped carbon (yeast@C) catalysts exhibited outstanding performance in the oxidation of Csp3-H bonds to ketones and esters giving excellent products yields (up to 98% yield) without organic solvents at low O2 pressure (0.1 MPa). The catalytic oxidation protocol exhibited broad range of substrates (38 examples) with good functional group tolerance, excellent regioselectivity and synthetic utility. The yeast-derived heteroatom-doped carbon catalysts showed good reusability and stability after recycle six times without any significant loss of activity. Exptl. results and DFT calculations proved the important role of N-oxide (N+-O–) on the surface of yeast@C and a reasonable carbon radical mechanism. In the experiment, the researchers used many compounds, for example, Phenyl(pyridin-2-yl)methanone (cas: 91-02-1HPLC of Formula: 91-02-1).
Phenyl(pyridin-2-yl)methanone (cas: 91-02-1) belongs to pyridine derivatives. Pyridine has a conjugated system of six π electrons that are delocalized over the ring. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. Pyridine groups exist in countless molecules, and their applications include catalysis, drug design, molecular recognition, and natural product synthesis.HPLC of Formula: 91-02-1