Sulfuric Acid → 1,3-di-tert-Butyl 5-nitrobenzene-1,3-dicarboxylate

Beteiligte Stoffe

Reaktionsschritte

5-Nitroisophthalic acid (4.22 g, 20 mmol) was suspended in dichloromethane (80 ml) and concentrated sulphuric acid (1 ml) was added. The solution was stirred and then saturated with isobutylene gas. The reaction vessel was stoppered and stirred at room temperature overnight. The solution was filtered and anhydrous potassium carbonate was added to the filtrate. the solution was filtered and evsaporated and the residue recrystallised from ethanol to leave the title compound as a white solid (2.2 g).

Herkunft & Nachweise