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ChemicalBook CAS DataBase List 4-HYDROXY-2-METHYLBENZOIC ACID 98
578-39-2

4-HYDROXY-2-METHYLBENZOIC ACID 98 synthesis

11synthesis methods
-

Yield:578-39-2 80%

Reaction Conditions:

with boron tribromide in dichloromethane

Steps:

14
4-Hvdroxy-2-methyl-benzoic acid: BBr3 (20 mmol, 5g, 10 eq.) was added to a solution of 4-methoxy-2-methyl benzoic acid (2 mmol, 0.332g) in DCM (20 ml) and the mixture was stirred under argon until HPLC indicated no starting material remained. HCI (0.1 M, 20 ml) was added and the mixture was filtered. The aqueous layer was evaporated then dissolved in methanol. The solvent was evaporated. The EPO dissolution/evaporation protocol was repeated a further 3 times and gave the pure product as a yellow solid (0.24g, 80%).

References:

MEDIVIR UK Ltd;PEPTIMMUNE, Inc WO2006/64286, 2006, A1 Location in patent:Page/Page column 93-94

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