methcathinone hydrochloride

hello everyone i want to know how long the bromination of propiophenone takes in this video: Methcathinone HCl Synthesis From Propiophenone in stage 1: I'm not sure if i have to stir it for 1 day or 1 hour is just enough... in stage 2: after the bromination process and after adding methylamine...

Stage one: 1-Phenylpropan-1-one Bromination Stage two: Preparation and Washing of Methcathinone Hydrochloride Stage three: Methcathinone Hydrochloride Formation Edit: 6:20 - 125 ml of ethyl acetate https://bbgate.com/threads/synthesis-of-methcathinone-hydrochloride-from-propiophenone.9410

The synthesis of Ephedrine hydrochloride is proceeding according to Scheme 1. Scheme 1 Were've carried out 3 synthesis of Ephedrine with 1, 1.5 and 2 equivalents of NaBH4 to methcathinone Starting reagents and materials for a one synthesis: 10 g of purified methcathinone hydrochloride 40-50...

Stage 1. Bromination of propiophenone The bromination of propiophenone occurs according to Scheme 1. Scheme 1 Starting reagents and materials 50 ml propiophenone 40 ml HBr (1,3 g/ml) 55 ml H2O2 35% 150 ml dichloromethane (DCM) 2000-2500 ml H2O 250 ml 5% Na2S2O3 (12.5 g and 238 ml H2O) 250...