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ChemicalBook CAS DataBase List 1,3-BENZODIOXOLE-4-CARBOXYLIC ACID
5768-39-8

1,3-BENZODIOXOLE-4-CARBOXYLIC ACID synthesis

13synthesis methods
-

Yield: 96%

Reaction Conditions:

with dihydrogen peroxide;potassium carbonate in methanol;water

Steps:

22 2,3-(methylenedioxy)benzoic acid
2,3-(methylenedioxy)benzoic acid A solution of 2,3-(methylenedioxy)benzaldehyde (160mg, 1.06mmol), potassium carbonate (960 mg, 6.9 mmol) and 2.4mL of hydrogen peroxide (30-32 wt.% solution in water) in 10 mL of methanol was stirred for 16 hours at room temperature. The mixture was washed with diethyl ether. The water layer was acidified with 1 N aq. HCl to pH>1, then extracted with ethyl acetate. The organic layer was dried over MgSO4, then concentrated to give the desired product (170mg, 96%). EI-MS (m/z) 164.8 (M-).

References:

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