The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Squeezing out the catalysts: the disulphide bond exchange in aryl disulphides at high hydrostatic pressure》. Authors are Sobczak, Szymon; Ratajczyk, Paulina; Katrusiak, Andrzej.The article about the compound:4,4-Dipyridyl Disulfidecas:2645-22-9,SMILESS:C1(SSC2=CC=NC=C2)=CC=NC=C1).Product Details of 2645-22-9. Through the article, more information about this compound (cas:2645-22-9) is conveyed.
Exchange of the disulfide bond is a prominent example of equilibrium reactions. Therefore, the wide library of disulfide exchange reactions requires the application of catalysts, such as reducing agents, strong bases, UV light, or ultrasounds to stimulate higher conversion yields. The recent observation of pressure-induced exchange of aryl disulfides in the absence of catalysts or other stimuli prompted our study on the mechanism explaining the effect of high pressure on the reaction equilibrium We employed the pressure between 100 and 400 MPa, for promoting the exchange reactions between various homodimeric aryl disulfides and for optimized conditions obtained 100% yields in pure single-crystal form of the heterodimer. The reactions were performed in a diamond-anvil cell, as well as in a hydraulic piston-and-cylinder press, and the products were characterized by X-ray diffraction, mass and NMR spectroscopy. The prominent role of high-entropy states, not attainable at ambient conditions, as well as the high-entropy nucleation, kinetic crystallization and other effects associated with the high-pressure environment, is apparent. This entropy-driven reactions are an efficient, environmentally-friendly, one-pot method for obtaining pure crystalline heterodimeric disulfides.
Different reactions of this compound(4,4-Dipyridyl Disulfide)Product Details of 2645-22-9 require different conditions, so the reaction conditions are very important.
Reference:
Bromide – Wikipedia,
bromide – Wiktionary