Pyridine N-oxides as catalysts for thione-thiol rearrangement was written by Harano, Kazunobu;Shinohara, Ikuo;Murase, Motoji;Hisano, Takuzo. And the article was included in Heterocycles in 1987.Quality Control of 3,5-Dimethylpyridine 1-oxide This article mentions the following:
Rearrangement of O-alkyl S-Me dithiocarbonates I (R = Me, Et, Pr, CHMe2, cyclohexyl, PhCH2) in the presence of pyridine N-oxide (II; R1 = R2 = H) gave S-alkyl S-Me dithiocarbonates III in 62-98% yields. A solid-phase copolymer of 4-vinylpyridine N-oxide was also a useful catalyst. Rearrangement of I (R = Et) with II (R1 = Ph, R2 = H; R1 = H, R2 = Br) gave 20 and 31% III (R = Et), resp. In the experiment, the researchers used many compounds, for example, 3,5-Dimethylpyridine 1-oxide (cas: 3718-65-8Quality Control of 3,5-Dimethylpyridine 1-oxide).
3,5-Dimethylpyridine 1-oxide (cas: 3718-65-8) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals.Quality Control of 3,5-Dimethylpyridine 1-oxide