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Market => Product offers => Topic started by: ThreeKings on July 01, 2013, 07:27 am

Title: 2-bromo-4’-methylpropiophenone - Mephedrone precursor ♔♔♔ From EU
Post by: ThreeKings on July 01, 2013, 07:27 am
2-bromo-4’-methylpropiophenone

Listings from 10g-1kg.

Ready to be shipped from Europe Union

Mephedrone synthesis:
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2-bromo-4’-methylpropiophenone to 1-(4-methylphenyl)-2-methylaminopropanone
hydrochloride 3
13.5g methylamine HCl in 15mL water
7.9g sodium hydroxide in 20mL water
11.4g 2-bromo-4’-methylpropiophenone
6mL 37% HCl diluted with 24mL water
115mL toluene
225mL water
Acetone
To a stirred solution of 11.4g (50mmol) 2-bromo-4’-methylpropiophenone in 25mL toluene held at
20oC was added, over 5 minutes, 6.2g methylamine in 35mL water (prepared by adding a solution of
7.9g (198mmol) sodium hydroxide in 20mL cold water to a cooled solution of 13.5g methylamine HCl
in 15mL water). The mixture was allowed to stir for a further 16 hours at 20-25oC, then was poured
into 150mL ice-cold water. The toluene layer was separated off, and the remaining freebase extracted
with 2x20mL toluene. The combined toluene extracts were washed with 3x25mL water, and then
acidified with 2x15mL dilute HCl. The combined acidic extracts then washed twice with 25mL toluene
and evaporated under vacuum to dryness, allowing an off-white solid to form. 20mL acetone was
added and was heated to boiling, forming a homogenous solution, which was then slowly cooled,
allowing crystals to precipitate. The crystals were filtered and rinsed with around 100mL ice cold
acetone.
Yield: 4.8g (45%)

Another
Mephedrone synthesis with video: and proportions (in russian) google translate will be handy
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http://psyhonaft.ru/sintez/15-sintez-mefedrona-video.html



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