Nitromethane in Polyphosphoric Acid A New Reagent for Carboxyamidation and Carboxylation of Activated Aromatic Compounds
Distilling Nitromethane from OTC RC car fuel (Go Kyosho Inferno all the way)
How to make PolyPhosphoric acid by heating hydroponics ph down.
http://www.sciencemadness.org/talk/viewthread.php?tid=69862
Typical Procedure: Preparation of Benzoic Acids 7a–d
Corresponding aromatic compound 1a–d (1 mmol) and nitromethane 2
(0.244 g, 4 mmol) in PPA (3–4 g) was stirred at 90–95 C for 5–8 h (Table 2). The
reaction mixture was poured in water (30 mL) with intense stirring and then cooled
to 0 C, and sodium nitrite (0.069 g, 1 mmol) was added. The reaction mixture was
stirred at this temperature for 15 min, and benzoic acids 7a–d were precipitated.
The resulting mixture was extracted by CH2Cl2 (1030mL). The solution was evaporated
under vacuum; the residue was purified by crystallization from water.