i thought tempo oxidized only up to an aldehyde. - i'll see how generous my boss feels himself, and go for this one. looks like 1 g is around 45€.
as for Heyns, i'd rather try it if nothing else works. just to be on the safer side.
Although it adds up one more step to oxidize first to an aldehyde, then to an acid, i know my compound is fine with Dess-Martin and Swern oxidations. So i could go for either one - i like Swern better eventhough it's stinky
then the Pinnick. never tried that one before.
i'll see how it'll turn out. thanks a lot!!