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ChemicalBook CAS DataBase List 2,4-Dichlorophenol
120-83-2

2,4-Dichlorophenol synthesis

13synthesis methods
Phenol and chlorine gas are used as raw materials, and the mixed catalyst comprises diphenyl sulfide, ferric chloride, and trifluoromethanesulfonic acid, and the molar ratio of diphenyl sulfide, ferric chloride, and trifluoromethanesulfonic acid in said m
-

Yield:120-83-2 93.3 %Chromat. ,106-48-9 5.5 %Chromat.

Reaction Conditions:

with aluminum (III) chloride;sulfuryl dichloride in neat (no solvent) at 25 - 55; for 3 h;regioselective reaction;Reagent/catalyst;Temperature;

Steps:

4.3. Chlorination of phenol
General procedure: To a stirred mixture of melted phenol (9.41 g, 0.10 mol), AlCl3 (100 mg) and the appropriate poly(alkylene sulfide) (100 mg), SO2Cl2 (8.90 ml, 0.11 mmol) was slowly added over 2 h at room temperature (RT). The mixture was stirred at RT for 2 h and then quenched with water (20 ml). The products were extracted using Et2O (3 * 30 ml) and the combined solution was dried over MgSO4. The drying reagent was removed by filtration and the solvent was removed under reduced pressure until the weight was constant. A weighed aliquot of the products and a known quantity of tetradecane were used for the GC analysis. In some cases (see results and discussion) the mixture was warmed to 55°C for 1 h prior to work up or extra SO2Cl2 was used in the reaction.

References:

Smith, Keith;Hegazy, Amany S.;El-Hiti, Gamal A. [Journal of Sulfur Chemistry,2020,vol. 41,# 1,p. 1 - 12]

2,4-Dichlorophenol Related Search:

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