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3 4-Dichlorophenylhydrazine hydrochloride (CAS# 19763-90-7)

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3 4-Dichlorophenylhydrazine hydrochloride (CAS# 19763-90-7) Boitsebiso

kopo 3, 4-dichlorophenylhydrazine hydrochloride ke setsi sa meriana se ka sebelisoang ho lokisetsa biphenylpyridine.
mokhoa oa ho lokisetsa motsoako 3,4-dichloroaniline (38.88g,0.2399mol) e qhibiliha ka dichloroethane (30ml), ebe 12mol / L concentrated hydrochloric acid (70ml,0.84mol) e kenyelletsoa, ​​sodium nitrite (18.06g,0.261 themol) e eketsoa. tharollo ea karabelo e hlohlelletsoa ho 5 ℃ bakeng sa 30min, 'me mokelikeli o hlakisitsoeng oa tlhotloa, o theohela ho 140ml ea sodium sulfite solution e nang le (90.71g,0.7197mol), e arabela ho 80 ℃ ka lihora tse ka bang 3, e arabela ho hlahisa 3,4-dichlorophenylhydrazine, eketsa ka (60ml,0.72mol) concentrated hydrochloric acid bakeng sa 1 hora, hlohlelletsa bosiu bo le bong mocheso oa kamore, filthara ho fumana 3,4-dichlorophenylhydrazine hydrochloride tšoeu e tiileng 46.1g, lihlahisoa: 90%.

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