Wouldn't electrochemcal oxidation be a suitable means of oxidation?
The supplies are cheap, reusable, and only requires the starting oil and a couple acids. It is a very high yielding method for sure on the isoeugenl and isosafrole the only ones tested by my monkey (89&93%).
Isoeugenol, isosafrole, asarone, anethole, and other similar compounds can be made into their epoxides via electrochemical oxidation and refluxed with Libr for high yields of ketone or just with formic or sulphric acid.