Luo Li-mei
2005
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Journal
Fine Chemical Intermediates
Abstract
2,6-dichloro-4-trifluoromethylphenylhydrazine was prepared by hydrazinolysis of 3,4,5-trichloro -benzotrifluoride with hydrazine hydrate, reduced by hydrogen gas with Raney Ni as catalyst to give 2,6-dichloro-4-trifluoromethylaniline.Under the optimum condition the total yield of 2,6-dichloro-4-trifluoromethylphenylhy drazine was up to 81%. The effects of temperature, material mixture ratio and reaction time on the hydrazinolysis were also discussed. The structure of the compound was confirmed by spectral characterizations.