Hello guys and girls,
I want to synthesize poly-phosphoric acid and use it later on for a reaction(cyclization). I didn't found much on articles at the internet. But at the book " Encyclopedia of reagents for organic synthesis" i found a synthesis that says the following :"Preparative Methods: by mixing x mL of Phosphoric Acid (85%, d 1.7 g mL-1) with 2.2 x g of
Phosphorus(V) Oxide (P2O5) followed by heating to 200 °C for 30 min." Has anyone tried this before? If so, how did it turn out?
(Also, i don't want to buy the reagent online)
Thank you in advance.