Good luck getting this technique to work. I never got anything other than inconclusive results. The general idea is to have safrole in 10% NaOCl and slowly drip in HCl. Then isolate the chlorohydrin, treat with hydroxide in alcohol to get the epoxide, and then distill or rearrange to get the ketone.
I'm starting to get the sense that to use bleach as an oxidant, you need an appropriate catalyst.