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