In 2018,ACS Catalysis included an article by Siddiki, S. M. A. Hakim; Touchy, Abeda S.; Jamil, A. R. Md.; Toyao, Takashi; Shimizu, Ken-ichi. Safety of 2-(2-Hydroxyethyl)pyridine. The article was titled 《C-Methylation of Alcohols, Ketones, and Indoles with Methanol Using Heterogeneous Platinum Catalysts》. The information in the text is summarized as follows:
A versatile, selective, and recyclable heterogeneous catalytic method for the methylation of C-H bonds in alcs., ketones, and indoles with methanol under oxidant-free conditions using a Pt-loaded carbon (Pt/C) catalyst in the presence of NaOH is reported. This catalytic system is effective for various methylation reactions: (1) the β-methylation of primary alcs., including aryl, aliphatic, and heterocyclic alcs., (2) the α-methylation of ketones, and (3) the selective C3-methylation of indoles. The reactions are driven by a borrowing-hydrogen mechanism. The reaction begins with the dehydrogenation of the alc.(s) to afford aldehydes, which subsequently undergo a condensation reaction with the nucleophile (aldehyde, ketone, or indole), followed by hydrogenation of the condensation product by Pt-H species to yield the desired product. In all of the methylation reactions explored in this study, the Pt/C catalyst exhibits a significantly higher turnover number than other previously reported homogeneous catalytic systems. Moreover, it is demonstrated that the high catalytic activity of Pt can be rationalized in terms of the adsorption energy of hydrogen on the metal surface, as revealed by d. functional theory calculations on different metal surfaces. The experimental part of the paper was very detailed, including the reaction process of 2-(2-Hydroxyethyl)pyridine(cas: 103-74-2Safety of 2-(2-Hydroxyethyl)pyridine)
2-(2-Hydroxyethyl)pyridine(cas: 103-74-2) belongs to pyridine. Pyridine is a relatively complex molecule and exhibits a number of different bands in IR spectra. Among others, the bands characterizing the ν8a and ν19b modes have been found to be sensitive to the coordination or protonation of the molecule. Note that the band that is diagnostic for the PyH+ ion at about 1545 cm− 1 (ν19b mode) does not overlap with any of the other bands.Safety of 2-(2-Hydroxyethyl)pyridine