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2-Bromo-4'-methylpropiophenone can be used as an intermediate in pharmaceutical synthesis. Such as the preparation of 4-methylmethcathinone (4-MMC), also known as Mephedrone (Mephedrone), other names include 2-Bromo-1-(p-tolyl)propan-1-one, 2-Bromo-4'-methylpropiophenone, EY1&VR D1 or CAS 1451-82-7.1) Under the protection of argon, add (4g, 30mmol) of anhydrous aluminum chloride to the reaction flask, then add 20ml of anhydrous dichloromethane, and stir to dissolve. After dissolving, add (1.7g, 10mmol) 2-bromopropionyl chloride, and continue to stir for 20 min. Then (0.92g, 10mmol) toluene was added, and the addition was completed dropwise within 30 minutes. After the dropwise addition is completed, reflux for 2H, and cool to room temperature after the reflux is completed. 2) After cooling, pour the solution into 40ml of ice water, add 20ml of dichloromethane and 20ml of 6N hydrochloric acid, shake vigorously and then stand still and separate into layers. After layering, the dichloromethane phase of the lower layer was left. After washing the dichloromethane phase with 1NHCL twice, it was dried with anhydrous magnesium sulfate, filtered, and rotary evaporated to obtain a transparent oily substance. 3) Place the transparent substance in a crystallization dish and add ether to dissolve, then slowly add petroleum ether until slightly turbid, cover and clip a piece of paper to stand still in a fume hood to crystallize to obtain 1.37g of product 2-bromo-4' -Transparent crystals of methyl phenylacetone.| Product Name | 2-Bromo-4'-methylpropiophenone |
| CAS | 1451-82-7 |
| EINECS | 696-162-0 |
| Molecular formula | C10H11BrO |
| Molecular Weight | 227.1 |
| Boiling point | 75-77ºC |
| Flash point | 59°C |
| Appearance | White crystalline powder |
| PSA | 17.07000 |
| LogP | 3.00 |
| Storage conditions | Refrigerator |
| Material | Industral Chemicals / Organic Intermediates Function |
| Function | Mainly use in Pharmaceutical Intermediates / medical intermediate |