i have said this one numerous times, vogels exp for oxidising NONPOLAR SECONDARY alcohols to ketones.
You make ur alcohol and extract it immediately with ether. The ether soln is then reacted at room temp with good stirring for 2hrs (quite a lot he did) and u form a ketone with NO SIDE REACTIONS.
apparently the pol sits in the insoluble ether layer. The chromic acid forms a soluble ester which brings it into the aquesous layer, this hydrolyses or something, bammo a ketone is formed and it goes str8 back into the ether layer, not subjected to anymore acid, oxidising agents etc.
The only prob is making the 2POl, i think its quite difficult. but if u do make it look at this method:
1. Ether extraction of alcohol, no boilng increasing temps to get 2Pol out
2. Rm temp oxidation and quite short
3. apparently no side rxns.
his example was octan-2-ol to octan-2-one