Here is another ref on production of the diol/epoxide form Isosafrole but this time the ref actually used Isosafrole.
Electrochemical Procedure for a Practical Preparation of Piperonal form Isoafrole
J. Org. Chem. 49, 1830-1832 (1984) (https://www.thevespiary.org/rhodium/Rhodium/chemistry/isosafrole.electro.html)
(https://www.thevespiary.org/rhodium/Rhodium/chemistry/isosafrole.electro.html)
Experimental Section
Electrolysis of Isosafrole (2). Preparation of 1-[3,4(Methylenedioxy)phenyl]propane-1,2-diol (3a).
A mixture of 2 (100 mg, 0.62 mmol) and NaBr (192 mg, 1.9 mmol) dissolved in MeCN (7 mL) and H20 (3 mL) was electrolyzed in a beakertype undivided cell (3 cm in diameter and 10 cm in height). A constant current (20 mA, 2.83 F/mol) was passed for 140 min by using platinum foils (2 X 1.5 cm2 ) as electrodes and a Metronix Model 543B DC power supply. After the electrolysis at room temperature, 0.5 mL of 1% aqueous H2S04 was added to the mixture, which was stirred for 1 h and neutralized with aqueous NaHCO3. After evaporation of solvents under reduced pressure, the organic substances were extracted with ethyl acetate. The extracts were washed with brine, dried (Na2SO4), and concentrated in vacuo to give a colorless oil, which was chromatographed (Mallinckrodt Silica CC-7 Special), affording 3a (116 mg, 98%) as colorless crystals whose spectral data were identical with those reported.
1-[3,4-(Methylenedioxy)phenyl]-2-propanone (5).
A solution of 3a (100 mg, 0.5 mmol) and p-TsOH (200 mg) dissolved in a distilled benzene (20 mL) was refluxed for 20 min. The usual workup gave 5 (75 mg, 84%)
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