You didn't even get a UTFSE from some other beez. Consider yourself lucky.
Fine comb Rhodium's and you'll find a procedure for beta-Asarone to 2,5-DiMeOPropenylbenzene. Now make Ketone with performic or whacker or whatever. DOx is in sight no?
Selenium dioxide.... I don't think you need more clues!!
Granted this procedure is for 2,4,5-PropenylBenzene, but it should work equally well for Propylbenzene...... or did you really mean 2,4,5-PropenylBenzene to 2,5-PropenylBenzene?
Happy reading.
