(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000413606-file_8qjs.gif)
Isosafrole epoxide (1h) in refluxing dichloroethane (containing Li or Na Perchlorate as electrolyte) is rearranged to MDP2P (2h) in 82% yield by electrolyzing the solution with platinum foil electrodes. At a current density of 3.3 mA/cm2, 0.06 Faradays per mole of epoxide is required to effect the transformation.
With slight modifications to the procedure and addition of acetone, isosafrole glycol acetonide can be produced instead in 85% yield, and is easily hydrolyzed to isosafrole glycol with dilute acid.
Tet. Lett. 24(28), 2857-2860 (1983) (https://www.thevespiary.org/rhodium/Rhodium/chemistry/epox-iso.electro.html)
(https://www.thevespiary.org/rhodium/Rhodium/chemistry/epox-iso.electro.html)