Process for preparing alpha-chloro acetophenone

The invention relates to the preparing process of alpha-chloroproionyl chloride, which comprises measuring acetyl benzene, acid and DCDMH by the molar weight of 1:0.1-1.0:0.5-1.0 times, charging acetophenone and acid as catalyst into containers, stirring and elevating temperature to 10-100 deg. C, d...

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Bibliographic Details
Main Author XINZHUO,XU ZOU
Format Patent
LanguageEnglish
Published 23.11.2005
Edition7
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention relates to the preparing process of alpha-chloroproionyl chloride, which comprises measuring acetyl benzene, acid and DCDMH by the molar weight of 1:0.1-1.0:0.5-1.0 times, charging acetophenone and acid as catalyst into containers, stirring and elevating temperature to 10-100 deg. C, dropping DCDMH solution, reacting 4-8 hours, decompressing for removing the filter liquor, , charging filtering deposit into iced water, washing residue to neutral, filtering to obtain dust cakes, drying the dust cakes, obtaining alpha-chloroacetophenone, charging sodium carbonate into the filter liquor for neutralizing, removing water, washing residue with acetone, filtering, removing solvent, reclaiming by-product hydantoin.
Bibliography:Application Number: CN2005125531