Bratt, Jack; Iddon, Brian; Mack, Arthur G.; Suschitzky, Hans; Taylor, Jack A.; Wakefield, Basil J. published the artcile< Polyhaloaromatic compounds. Part 41. Photochemical dehalogenation and arylation reactions of polyhaloaromatic and polyhaloheteroaromatic compounds>, Recommanded Product: 2,3,4,6-Tetrachloropyridine, the main research area is photochem dehalogenation arylation haloarom compound; photocyclization thiopyridine; halobenzene poly photochem dehalogenation arylation; pyridine halo dehalogenation arylation.
Photolysis of pentachloro- and pentabromopyridine in Et2O led to β-halogen loss and the formation of a product of attack by Et2O, I (R = Cl, Br, resp.). Both 4-bromo- and 4-iodotetrachloropyridines underwent exclusive loss of Br and iodine, resp. Perhalothiophenes, tetrachloropyrimidine and C6Cl6 underwent similar dehalogenation reactions. Photolysis of C6Cl5I (II), tetrachloroiodopyridines and trichloro-5-iodothiophene in C6H6 gave the corresponding polychloroaryl- or polychloroheteroarylbenzenes. E.g., II underwent photolysis in C6H6 to give 95% 2,3,4,5,6-pentachlorobiphenyl. Photolysis of the pyridines III (R1 = SPh, SC6Cl5) gave the corresponding photocyclization products IV (R2 = H, Cl) resp.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) published new progress about Photochemical arylation. 14121-36-9 belongs to class pyridine-derivatives, and the molecular formula is C5HCl4N, Recommanded Product: 2,3,4,6-Tetrachloropyridine.