I have a little problem.
You can see my reaction on the following picture.
i'm sure of the structure of my reactant. So I heated during one night my ester in an EtOH/NaOH solution. Then I added HCl and a I got a withe solid which I suspect is my acid be cause it is only soluble in a KOH solution.
But I have some problem in NMR... how can I dissolve this acid? I tryed CDCl3, CD3OD, D2O and it is only slightly soluble in DMSO... but the NMR 500 MHz see nothing except the DMSO signal...
So , if you have an idea... you're welcome!