Mefedrono (4-MMC) sintezė [2B4M, etilo acetatas, metilamino HCl]

dodobird

Don't buy from me
Member
Language
🇺🇸
Joined
May 27, 2024
Messages
2
Reaction score
1
Points
3
@gpatton Prašau, pasakykite šiam noobui (man), kokį vaidmenį šioje sintezėje atlieka NAOH ir natrio bikarbonatas. Būsiu dėkingas už atsakymą. ačiū
 

Osmosis Vanderwaal

Moderator in US section
Resident
Joined
Jan 15, 2023
Messages
1,640
Solutions
4
Reaction score
1,171
Points
113
Deals
1
117,6 % 2-b-4-mp sumos. Parašykite man apskaičiavimą. ( patarimas: tai sunkesnis elementas dalijamas iš lengvesnio
 

WillD

Expert
Joined
Jul 19, 2021
Messages
783
Reaction score
1,073
Points
93
Kaip kitoje temoje rašė Hanna520, šiai sintezei geriau pasiruošti alk. metilaminą. Gausite mažiau problemų, susijusių su etilo acetato hidrolize. Galite naudoti trietilaminą, etanolį arba metanolį, arba THF. Gausite dujų tirpalą ir druskų nuosėdas be vandens. Jį lengva atskirti dekantuojant ir galėsite sėkmingiau pradėti sintezę. Nedideliems kiekiams tai paprastai nėra problema, tačiau jei norite sintetinti kelis kg vienu metu, situacija gerokai skirsis.
 

goku1008

Don't buy from me
New Member
Language
🇺🇸
Joined
Nov 27, 2024
Messages
8
Reaction score
2
Points
3
2b4m is bk ?
2i4m is ik im i right
 

Naruto

Don't buy from me
New Member
Language
🇬🇧
Joined
Nov 28, 2024
Messages
12
Reaction score
0
Points
1

goku1008

Don't buy from me
New Member
Language
🇺🇸
Joined
Nov 27, 2024
Messages
8
Reaction score
2
Points
3
thanks man
 

mcdonalds

Don't buy from me
Resident
Language
🇺🇸
Joined
Jul 3, 2024
Messages
5
Reaction score
1
Points
3
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
 

Dr. MMX

Professional
Manufacturer Seller
Language
🇬🇧
Joined
Nov 28, 2023
Messages
234
Reaction score
141
Points
43
Deals
17
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.
 
Top