Síntese simples de metilona (bk-MDMA)

karamelosanto

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Olá, obrigado por compartilhar essa síntese, acho que está muito clara.
Sou da América do Sul e aqui é um pouco difícil encontrar o DCM. No entanto, posso tentar encontrá-lo de alguma forma. Talvez comprando-o da China.
Gostaria de perguntar. Vocês poderiam colocar todos os regentes em uma lista com quantidades para facilitar a compreensão do que devo comprar. Se possível, com um preço estimado.
Obrigado!!!
 

Professor11

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Pode me mandar uma mensagem? Sou da América do Sul também, estou iniciando na produção de Metilona.
 
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A tabela mostra que a densidade de 40% de metilamina é 0,89g/cm3, portanto, 7,18g de gás de metilamina pura são obtidos em 20ml.
Vamos comparar os pesos moleculares da metilamina e de seu cloridrato:
M (CH3NH2)HCl = 67,518 g/mol
M CH3NH2 = 31,057 g/mol.
Proporção = 2,174
Se você usar as proporções da síntese, precisará de 15,6 g de cloridrato de metilamina para substituir 20 ml de solução de metilamina a 40%.
O cloridrato de metilamina precisa ser dissolvido previamente na proporção de 1g para 2,5 ml de água (15,6g e 39 ml).
Prepare uma solução de hidróxido de sódio (NaOH) de 18 g e 54 ml de água, deixe esfriar e despeje-a em um frasco com a solução de 2-bromo-3,4-metilenodioxipropiofenona. Depois disso, adicione a solução de cloridrato de metilamina. Em seguida, continue de acordo com as instruções.
 
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arundo

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Hello, I'm doing the math, and I see that the molar ratio of NaOH isn't equivalent with methylamine HCl. It doubles. It's for some reason?
 

antrax

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Quero tentar a síntese química do bk-MDMA. Já comprei todos os produtos químicos necessários e começarei diretamente com o precursor 2-Bromo-3',4'-(methylenedioxy)propiophenone (número CAS: 52190-28-0), pois já o comprei de um fornecedor chinês de produtos químicos e paguei 280 dólares por 1 kg com frete incluído, a partir de 25 kg pagarei 200 dólares por cada kg.
kg com frete incluso.

Comprei a solução aquosa de metilamina a 40% de um fornecedor polonês, embora não tenha sido uma tarefa fácil encontrá-la, e os outros produtos químicos estão facilmente disponíveis no mercado nacional, exceto o ácido clorídrico a 36%, só encontrei ácido clorídrico de grau analítico a 35-38%, que comprei, e o sulfato de magnésio, que não sabia qual comprar, então comprei o anidro.



Vou seguir a seguinte síntese química do bk-MDMA, pois parece mais fácil do que a que você compartilhou, mas posso estar errado, gostaria que você me desse sua opinião.

http://bbzzzsvqcrqtki6umym6itiixfhni37ybtt7mkbjyxn2pgllzxf2qgyd.onion/threads/bk-mdma-synthesis-easy-and-fast-method.6423/

Obrigado!!!
 

Eddybeaumont

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hello mate, can you give me an address to buy cas 52190-28-0 please?
 

Osmosis Vanderwaal

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Someone asked me the other day about using sesamol to get MD-P1P, and it looked possible. Any opinion on that?
DBVaQ6hicT
 

Wan Jack

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In a reaction kettle equipped with a condensing reflux, stirring, dropping and heating device, 111.3 g of catechol, 500 ml of dichloroethane and 166 g of ZnCl2 were added, stirred, cooled to 0-5°C, and 140 g of propionyl chloride was slowly added dropwise for about 2 hours, then the temperature was raised to 20°C and the reaction was continued for 15 hours. After the reaction was completed, water was added for dilution, and the organic phase was separated. The organic phase was sequentially acid-washed and washed with water, dried with sodium sulfate, desolventized, and the residue was recrystallized from ethanol to obtain 144 g of solid 3,4-dihydroxypropiophenone with a melting point of 145-146°C, a content of 98%, and a yield of 85%.
 
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William D.

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Yes, this method is more understandable. But I heard that you can use iodine as a Lewis acid catalyst. For more moderate conditions. I did not have time to check it, but I think that there is need study. Because the chinese intermediate of this substance have is of very poor quality, I think they have problems with the synthesis.
 

Wan Jack

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Please refer to the next step( Patent: US1964973 , 1932)
 

Wan Jack

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Sesamol Obtain MD-P1P No relevant information found
 

Wan Jack

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Preparation of 3,4-methylenedioxypropiophenone
Methanesulfonic acid (MSA, 288 g) and propionic anhydride (156 g) were charged into a 1-liter reaction flask. The mixture was cooled to 0°C and 122 g of 3,4-methylenedioxybenzene (MDB) was added under stirring. The reaction mass was maintained at 0°C to 5°C for 4 hours under stirring. After the completion of the reaction, the reaction mass was diluted with water and the 3,4-methylenedioxypropiophenone product and unreacted MDB were extracted using toluene. The toluene layer was distilled to recover 13 g of unreacted MDB and obtain 142 g of 3',4'-methylenedioxypropiophenone (GC purity > 98%, yield 131% w/w based on consumed MDB). The water layer was distilled to recover 273 g of MSA (purity > 98%), which could be reused in subsequent batches.
 
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