hypophosphorous acid

Amphetamine Synthesis from phenylpropanolamine hydrochloride with reduction using I2 and H3PO2. Starting reagents and materials 4.84 g phenylpropanolamine hydrochloride 10.4 g I2 9.4 ml H3PO2 20-50 ml H2O 50 ml 25% NaOH (15-20 г NaOH) 3 g sodium thiosulfate 250-300 ml DCM 30-50 g Na2SO4...

This method describes how to turn racemic ephedrine hydrochloride to methamphetamine via relatively simple reaction with iodine (I2) and hypophosphorous acid (H3PO2). https://bbgate.com/threads/methamphetamine-synthesis-from-ephedrine-by-using-i2-and-h3po2.10423/#post-56705

Starting Reagents and Materials 6 g Synthetic ephedrine hydrochloride racemic 12 g I2 10.8 ml H3PO2 (50%) 20 ml H2O 50 ml 25% NaOH (15-20 г NaOH) 3 g sodium thiosulfate 250-300 ml DCM 30-50 g Na2SO4 100 ml Petroleum ether HCl gas 100 g NH4Cl 25 ml H2SO4 83% Flasks 250 and 500 ml Glasses Funnels...