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ChemicalBook CAS DataBase List 1-Naphthaleneacetic acid
86-87-3

1-Naphthaleneacetic acid synthesis

13synthesis methods
Industrially, 1-naphthaleneacetic acid is prepared by condensation reaction of naphthalene and chloroacetic acid in the presence of catalyst potassium chloride or aluminum powder.
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Yield:86-87-3 96.7%

Reaction Conditions:

at 200;Molecular sieve;Large scale;

Steps:

1-4 Example 4: (molar ratio 1:2)

Feeding is carried out in reactor 3 equipped with 85kg ZSM-5, the reaction temperature is 200°C, the naphthalene feed rate is 681kg/h, and after melting, it is uniformly dispersed into the reactor through the spray head 2. The feed rate of chloroacetic acid is 1000kg /h, after gasification, press into the reactor through the compressor, separate the 1-naphthaleneacetic acid and the excess liquid chloroacetic acid mother liquor through the filter press, the mother liquor is circulated to the reactor 3 through the pipeline through the circulation pump; 1-naphthalene The yield of acetic acid was 96.7%, and the purity of the product after drying was 98.8%.

References:

CN111153787,2020,A Location in patent:Paragraph 0032-0039

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