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Study on the synthesis of 2,4-dichloroacetophen

Guo‐Hua Zhang

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Abstract

2,4-Dichloroacetophen was synthesized with 1,3-dichlorobenzene as raw material and acetic anhydride as reagent of acylation.The factors that have influence on the action were investigated.The results showed that the optimal condition were molar ratio of 1,3-dichlorobenzene to acetic anhydride 2∶1 and the temperature around 50℃(up 60℃) of adding acetic anhydride slow,keeping 15~20 minutes then the temperature is going up to 90~95 ℃beating up about 2.5 hours;The yield of 2,4-dichloroacetophen such conditions was about 81.8%.

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What this paper is about

2,4-Dichloroacetophen was synthesized with 1,3-dichlorobenzene as raw material and acetic anhydride as reagent of acylation.The factors that have influence on the action were investigated.The results showed that the optimal condition were molar ratio of 1,3-dichlorobenzene to acetic anhydride 2∶1 and the temperature around 50℃(up 60℃) of adding acetic anhydride slow,keeping 15~20 minutes then the temperature is going up to 90~95 ℃beating up about 2.5 hours;The yield of 2,4-dichloroacetophen such conditions was about 81.8%.

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Available abstract

2,4-Dichloroacetophen was synthesized with 1,3-dichlorobenzene as raw material and acetic anhydride as reagent of acylation.The factors that have influence on the action were investigated.The results showed that the optimal condition were molar ratio of 1,3-dichlorobenzene to acetic anhydride 2∶1 and the temperature around 50℃(up 60℃) of adding acetic anhydride slow,keeping 15~20 minutes then the temperature is going up to 90~95 ℃beating up about 2.5 hours;The yield of 2,4-dichloroacetophen such conditions was about 81.8%.

Key concepts: Acetic anhydride, Acylation, Reagent, Yield (engineering), Molar ratio, Chemistry, Dichlorobenzene, Organic chemistry

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