| 摘要 |
NEW MATERIAL:The compound of formula (R is H, alkyl, allyl, aryl or aralkyl). EXAMPLE:2-Trifluoromethyl-3, 3, 3-trifluoropropane phenylhydrazide. USE:A synthetic intermediate of a pyrazolone derivative. PREPARATION:The compound of formula can be produced by reacting an octafluoroisobuityl lower alkyl ether or 1-lower-alkoxyperfluoro-isobutene with the hydrazine of formula H2NNHR in a solvent such as dimethylformamide in the presence of a catalyst such as triethylamine at -10-+40 deg.C.
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