https://www.thevespiary.org/rhodium/Rhodium/chemistry/peroxotungstate.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/peroxotungstate.html)
Post 379552 (https://www.thevespiary.org/talk/index.php?topic=12164.msg37955200#msg37955200)
(Rhodium: "Safrole Epoxidation: H2O2/PTC/Pertungstate", Novel Discourse) is the above reaction improved even further - it doesn't seem impossible to use that reaction to oxidize safrole to MDP2P in 90% yield, at a cost of $3.30 per mole (according to footnote 13 in the main article).