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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Main Author | |
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Format | Patent |
Language | English |
Published |
23.11.2005
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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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. |
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Bibliography: | Application Number: CN2005125531 |