74894-27-2Relevant academic research and scientific papers
Polyhalogenoaromatic Compounds. Part 42. 13C N.m.r. Spectra of Polyhalogeno-pyridines and pyrimidines
Iddon, Brian,Mack, Arthur G.,Suschitzky, Hans,Taylor, Jack A.,Wakefield, Basil J.
, p. 1370 - 1380 (2007/10/02)
13C N.m.r. spectra are reported for a number of polyhaloheno-pyridines and -pyrimidines.Substituent effects have been calculated and the results used to assign structures.
Polyhalogenoaromatic Compounds. Part 41. Photochemical Dehalogenation and Arylation Reactions of Polyhalogenoaromatic and Polyhalogenoheteroaromatic Compounds
Bratt, Jack,Iddon, Brian,Mack, Arthur G.,Suschitzky, Hans,Taylor, Jack A.,Wakefield, Basil J.
, p. 648 - 656 (2007/10/02)
Photolysis of pentachloro- and pentabromo-pyridine in diethyl ether or methanol leads to loss of β-halogen.A product (9) derived from attack on diethyl ether was also identified. 4-Bromotetrachloropyridine also undergoes loss of bromine and tetrachloro-4-iodopyridine loses iodine exclusively.Photodehalogenation of some perhalogenothiophens, tetrachloropyrimidine, and hexachlorobenzene is also described.Photolysis of pentachloroiodobenzene, tetrachloroiodopyridines, and trichloro-5-iodothiophen in benzene gives the corresponding polychloroaryl- or polychloroheteroaryl-benzenes.Photolysis of tetrachloro-4-(phenylthio)pyridine (3) gives 1,3,4-trichlorobenzothienopyridine (6), and the analogous perchloro(phenylthio)pyridine (37) gives the corresponding perchlorobenzothienopyridine (61).The scope of this type of photocyclisation has been explored; starting materials investigated include various arylthiopolyhalogenopyridines, some arylamino- and aryloxy-tetrachloropyridines, and 4-anilinotrichloropyrimidine.
