Было бы здорово получить видеозапись этого синтеза. 
Синтез мефедрона (4-MMC) [2B4M, этилацетат, метиламин HCl]
- Thread starter Dr. MMX
- Start date
117,6 % от суммы 2-b-4-mp. Напишите мне расчет. (подсказка: это деление более тяжелого элемента на более легкий.
Как написала Hanna520 в другой теме, для этого синтеза лучше приготовить алк. метиламин. Вы получите меньше проблем, связанных с гидролизом этилацетата. Вы можете использовать триэтиламин, этанол или метанол, или THF. Получите раствор газа и осадок солей без воды. Его легко отделить декантацией, и вы сможете успешнее начать синтез. Для небольших количеств это обычно не проблема, но если вы хотите синтезировать несколько килограммов за раз, все будет существенно иначе.
hello,
i sow in this post way for make reaction with Methylamine HCL ( no in 40% aqueous solution.
my question is because is more easy with hcl. Have differences with this dos ways?
is better follow the procedure with methylamine 40% aqueous solution prepared previously
or
add Metyliamine hcl directly to the mixture reaction like in this post
some one have tried both methods
Thanks for advanced
i sow in this post way for make reaction with Methylamine HCL ( no in 40% aqueous solution.
my question is because is more easy with hcl. Have differences with this dos ways?
is better follow the procedure with methylamine 40% aqueous solution prepared previously
or
add Metyliamine hcl directly to the mixture reaction like in this post
some one have tried both methods
Thanks for advanced
- By Dr. MMX
usage of hcl methylamine is inproper in that case, it releases more impurties into the mixture, but in the reality of really bad aq 40% that is used in the market i believe its better solution for the new chemists or ptacticants.
Its better to make it urself the aq from the hcl.
Its better to make it urself the aq from the hcl.
Hello everyone
I would like to know if everybody who tried this route of synthesis get a clear white product ?
I have to wash it Everytime after putting HCL acid inside
when I put icecold Aceton inside the reactor, It becomes dark red color
does anyone know about this problem
good work Dr.MMX
a very easy structure and easy to understand for everybody who want to learn
I would like to know if everybody who tried this route of synthesis get a clear white product ?
I have to wash it Everytime after putting HCL acid inside
when I put icecold Aceton inside the reactor, It becomes dark red color
does anyone know about this problem
good work Dr.MMX
a very easy structure and easy to understand for everybody who want to learn
- By Dr. MMX
acetone cant t be added like "all at once", must be ice cold, should be stirred.
You could have already by products in the freebase from the reaction, it oculd be too long, it could bee to short. Washing could be not ok. I never had red color yet so I cant really tell, as well I cant really tell anything as long there is no details. I can only suggest reading all ofthe post of the section and the best finding mistakes urseslf
compare with other user's results
You could have already by products in the freebase from the reaction, it oculd be too long, it could bee to short. Washing could be not ok. I never had red color yet so I cant really tell, as well I cant really tell anything as long there is no details. I can only suggest reading all ofthe post of the section and the best finding mistakes urseslf
compare with other user's resultsOh sry my mistake
I try to explain exaxtly next time
While I add hydrochloric acid (I stir throughout the entire precipitation process and I also used ice-cold acetone -20 degrees) the acetone/freebase mixture changes color I even think I found the error methylamine and 2b4m not fully reacted Blue-green spots remained in the reactor itself after the failure I have 1000 gr 2b4m, 5L ethyl acetate, 2L 50% caustic soda and 1500 gr. Methylamine HCL used The methylamine was added in 3x 500 g increments, which led to a prolonged reaction could probably be related to that
I try to explain exaxtly next time
While I add hydrochloric acid (I stir throughout the entire precipitation process and I also used ice-cold acetone -20 degrees) the acetone/freebase mixture changes color I even think I found the error methylamine and 2b4m not fully reacted Blue-green spots remained in the reactor itself after the failure I have 1000 gr 2b4m, 5L ethyl acetate, 2L 50% caustic soda and 1500 gr. Methylamine HCL used The methylamine was added in 3x 500 g increments, which led to a prolonged reaction could probably be related to that