mdp2np

Stage 1 Synthesis of piperonal Extraction of piperine from black pepper has been demonstrated previously. Starting reagents and materials 5 g recrystallized piperine 100 + 50 ml THF 10 g Potassium permanganate + 200-300 ml water 800-1000 ml DCM 50-100 g anhydrous sodium sulfate 25 ml EtOH...