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ChemicalBook CAS DataBase List 2,5-DIBROMOPHENOL
28165-52-8

2,5-DIBROMOPHENOL synthesis

5synthesis methods
95970-08-4 Synthesis
2,5-DIBROMOANISOLE

95970-08-4
102 suppliers
$13.00/1g

Benzenemethanol, α-ethenyl-2-hydroxy-

38865-40-6
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Yield:38865-40-6 53.3%

Reaction Conditions:

with aluminum (III) chloride in N,N-dimethyl-formamide at 80 - 100;

Steps:

2.4 (4) Demethylation reaction:

The product of the third step, 2,5-dibromoanisole 1080 g and DMF 5500 mL, was added to the reaction vessel.Stirring, control temperature was added to 688 g of aluminum trichloride in batches at 80-100 °C. The GC tracks until the reaction is over.After the reaction was completed, dichloroethane and water were added, and the mixture was separated.The oil phase was washed with water and separated, and the obtained oil phase was desolvated to obtain a black solid 2,5-dibromophenol 548 g, a content of 98%, and a yield of 53.3%.

References:

CN109320403,2019,A Location in patent:Paragraph 0011; 0015; 0016; 0020

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