Polyhalogenoheterocyclic compounds. Part 33. Mechanism of thermal rearrangements of perfluoropyridazine and perfluoroalkylpyridazines
作者:Richard D. Chambers、W. Kenneth R. Musgrave、Colin R. Sargent
DOI:10.1039/p19810001071
日期:——
Rearrangement of perfluoro-4,5-di-s-butylpyridazine (4) to a mixture of perfluoro-4,5-di-s-butylpyrimidine (13) and -2,5-di-s-butylpyrazine (20), occurs at 300 °C, in a sealed tube. Cross-over experiments between various fluorinatedpyridazine derivatives and, also, doubly 15N-labelled derivatives, rule out any rearrangementmechanism involving a cycloaddition process. Compound (4) and other fluorinated
BARNES R. N.; CHAMBERS R. D.; HERCLIFFE R. D.; MUSGRAVE W. K. R., J. CHEM. SOC. PERKIN TRANS., 1981, PART 1, NO 7 2059-2064
作者:BARNES R. N.、 CHAMBERS R. D.、 HERCLIFFE R. D.、 MUSGRAVE W. K. R.
DOI:——
日期:——
Polyhalogenoaromatic compounds. Part 34. Syntheses of perfluoroaza- and -diaza-cyclohexadiene derivatives by fluorination of perfluoroazines and -diazines
作者:Robert N. Barnes、Richard D. Chambers、Robert D. Hercliffe、W. Kenneth R. Musgrave
DOI:10.1039/p19810002059
日期:——
Fluorination of perfluoroalkyl-pyridines, -pyrimidines, and -pyrazines, using cobalt trifluoride, gave corresponding aza- and diaza-cyclodienes, in some cases in high yields. Perfluoroalkylpyridazines gave products arising from loss of nitrogen and provide a novel route to some highly crowded perfluorinated olefins. Fluorination with elemental fluorine gave an unusal dimer with perfluoropyrimidine