作者:V. M. Timoshenko、Ya. V. Nikolin、N. P. Kolesnik、Yu. G. Shermolovich
DOI:10.1023/a:1012427229154
日期:——
2,2,3,3-Tetrafluoropropyl and 2,2,3,3,4,4,5,5-octafluoropentyl alkyl sulfones react with ammonia, primary and secondary amines, hydrazine hydrate, phenylhydrazine, and N,N-dimethylhydrazine to afford, depending on the length of the polyfluoroalkyl chain and reaction conditions, the corresponding enamines, imines, or mono- and bis-hydrazones. The bis-hydrazone obtained from phenylhydrazine and 2,2,3,3,4,4,5,5-octafluoropentyl benzyl sulfone is capable of undergoing further dehydrofluorination to give 5-difluoronlethyl or 5-unsubstituted 1-phenylpyrazole.