Lithium to pseudoephedrine ratio. WO2002090316A1 - Method of inhibiting methamphetamine synthesis - Google Patents

Discussion in 'all' started by Faulmaran , Wednesday, February 23, 2022 6:13:04 PM.

  1. Maladal

    Maladal

    Messages:
    55
    Likes Received:
    11
    Trophy Points:
    4
    The proposed mechanism of the dissolving metal reduction reaction involves the two-electron reduction of ephedrine or pseudoephedrine to give the methamphetamine product, as follows:. KRA en. ISBN The details for the synthesis are readily available from the open literature and the Internet. Iodine tincture--a solution of iodine in alcohol--is widely available. USP true
     - Lithium to pseudoephedrine ratio.
     
  2. Fenrizilkree

    Fenrizilkree

    Messages:
    14
    Likes Received:
    6
    Trophy Points:
    6
    One common method of illicit methamphetamine manufacture utilizes an alkali metal, typically lithium, and liquid ammonia to chemically reduce ephedrine or.Organic Letters23 3 ,
     
  3. Malajin

    Malajin

    Messages:
    869
    Likes Received:
    26
    Trophy Points:
    3
    Assess extraction efficiency of pseudoephedrine from claimed tamper varied to determine the ratios of reagents (e.g., number of lithium.ISBN X.
     
  4. Malat

    Malat

    Messages:
    883
    Likes Received:
    26
    Trophy Points:
    6
    ephedrine/pseudoephedrine. “Methamphetamine yield” is obtained from the ratio of ephedrine and methamphetamine present in the reaction.Baird et al.
    Lithium to pseudoephedrine ratio.
     
  5. Tecage

    Tecage

    Messages:
    816
    Likes Received:
    26
    Trophy Points:
    4
    "Methamphetamine yield" is obtained from the ratio of ephedrine and Lithium metal is dissolved in the liquid, anhydrous ammonia to give a blue colored.Attorney's Office Eastern District of Oklahoma.
     
  6. Mikakree

    Mikakree

    Messages:
    205
    Likes Received:
    27
    Trophy Points:
    5
    Lithium works as a catalyst with the anhydrous ammonia to remove the pseudoephedrine's extra oxygen molecule. As with the anhydrous method.The reaction is named after the Australian chemist Arthur Birch and involves the organic reduction of aromatic rings in liquid ammonia with sodiumlithiumor potassium and an alcoholsuch as ethanol and tert -butanol.
     
  7. Nijar

    Nijar

    Messages:
    526
    Likes Received:
    4
    Trophy Points:
    6
    Using pseudoephedrine as the starting precursor, these include: the ammonia to lithium molar ratio, quenching agents, extraction.During the trial witnesses testified that the store owner knew the crystals were to be used to manufacture methamphetamine.
     
  8. Zutilar

    Zutilar

    Messages:
    199
    Likes Received:
    24
    Trophy Points:
    3
    Clean is totally correct, but you were wrong. One needs a molar ratio of lithium to pseudoephedrine, or molar if pseudo HCl is used.The aqueous layer was further extracted with 2x20 mL diethyl ether.
    Lithium to pseudoephedrine ratio.
     
  9. Grolrajas

    Grolrajas

    Messages:
    538
    Likes Received:
    4
    Trophy Points:
    5
    Ephedrine. Bronchodilator/Stimulant. Pseudoephedrine. Decongestant. Liquid Ammonia. Fertilizer. Lithium. Batteries. Organic Solvent.Your questions, comments, and suggestions for future subjects are welcome at any time.
     
  10. Aralkree

    Aralkree

    Messages:
    816
    Likes Received:
    25
    Trophy Points:
    4
    Birch Reduction method combines anhydrous ammonia and lithium or sodium metal with ephedrine or pseudoephedrine. The red-P method.The structures and reactivities of pseudoephedrine-derived dianionic Myers enolates are examined.
     
  11. Guzil

    Guzil

    Messages:
    519
    Likes Received:
    19
    Trophy Points:
    2
    Two electrons are required to reduce a molecule of ephedrine into methamphetamine. Therefore the proper molar ratio for reactants is 2Li to 1 pseudo.This rule does not apply to iodine tinctures or other iodine mixtures.
     
  12. Negar

    Negar

    Messages:
    228
    Likes Received:
    21
    Trophy Points:
    2
    TRANSFORMATION OF PSEUDOEPHEDRINE AMIDES INTO HIGHLY ENANTIOMERICALLY ( mmol) of 95% lithium aluminum hydride (Note 1) under a nitrogen atmosphere.Organic reaction used to convert arenes to cyclohexadienes.
     
  13. Fet

    Fet

    Messages:
    610
    Likes Received:
    15
    Trophy Points:
    0
    Ammonia acts as a solvent for the electrons, carrying these electrons to the pseudoephedrine or ephedrine molecules.3 While older lithium-ammonia reduction.Federal and state chemical control laws, which include reporting rules, maximum purchase thresholds, and sentencing guidelines, are effective tools that law enforcement officials may use to counter this threat.
     
  14. Togor

    Togor

    Messages:
    755
    Likes Received:
    5
    Trophy Points:
    3
    Structural and rate studies show that lithium chloride has little effect on the dynamics of the enolate homoaggregates but forms adducts of.More by David B.
     
  15. Brajind

    Brajind

    Messages:
    824
    Likes Received:
    29
    Trophy Points:
    4
    forum? The principal chemicals are ephedrine or pseudoephedrine, iodine, and red phosphorus. The required hydriodic acid in this variation of the hydriodic.The ammonia is allowed to boil off leaving the crude, free-base methamphetamine product, which is typically purified by common practice and converted to the hydrochloride salt.
     
  16. Fenrijora

    Fenrijora

    Messages:
    675
    Likes Received:
    23
    Trophy Points:
    0
    The lithium is dissolved by the ammonia, freeing electrons, which can then be used to reduce ephedrine or pseudoephedrine to methamphetamine.It also prohibits a person from knowingly or intentionally evading established recordkeeping or reporting requirements.
     
  17. Vigul

    Vigul

    Messages:
    549
    Likes Received:
    9
    Trophy Points:
    0
    of ephedrine or pseudoephedrine isomers can also help in the in a one-step reaction using widely available ammonia, and lithium Split ratio.Preferred catalytic compounds include metal coordination compounds, more preferably transition metal coordination compounds such as, for example, Fe III compounds including FeCl 3Fe III citrate, Fe acetylacetonate 3and Fe F 6 -acetylacetonate 3Fe II compounds including FeCl 2 and organometalhc compounds such as ferrocene and ferrocene derivatives, such as the ferrocene derivatives described in U.
     
  18. Tam

    Tam

    Messages:
    315
    Likes Received:
    7
    Trophy Points:
    0
    bon and nitrogen stable isotope ratio (13C and 15N) analysis of samples of crys- Lithium (or sodium) in liquid ammonia. Chloropseudoephedrine.Because the average methamphetamine producer has relatively low chemistry skills, increasing the level of difficulty is expected to significantly decrease the number of individuals capable of conducting the procedure.
     
  19. Tugar

    Tugar

    Messages:
    619
    Likes Received:
    11
    Trophy Points:
    6
    Ibuprofen and Pseudoephedrine Hydrochloride Tablets USP With lithium may elevate plasma lithium levels, reduce renal lithium clearance and increase the.Feed and tack stores, also primary sources for the cutting agent MSM methylsulfonylmethaneare particular targets.
    Lithium to pseudoephedrine ratio.
     
  20. Grosida

    Grosida

    Messages:
    928
    Likes Received:
    17
    Trophy Points:
    0
    The reaction is named after the Australian chemist Arthur Birch and involves the organic reduction of aromatic rings in liquid ammonia with sodium, lithium.Producers may also acquire larger quantities of iodine tincture and convert it to crystals.
     
  21. Murisar

    Murisar

    Messages:
    49
    Likes Received:
    4
    Trophy Points:
    0
    Kind code of ref document : A1.
     
  22. Mek

    Mek

    Messages:
    849
    Likes Received:
    14
    Trophy Points:
    1
    Your questions, comments, and suggestions for future subjects are welcome at any time.
     
  23. Daikus

    Daikus

    Messages:
    395
    Likes Received:
    21
    Trophy Points:
    1
    The details for the synthesis are readily available from the open literature and the Internet.
     
  24. Nagore

    Nagore

    Messages:
    247
    Likes Received:
    21
    Trophy Points:
    3
    Yeh et al.
     
  25. Tebei

    Tebei

    Messages:
    705
    Likes Received:
    26
    Trophy Points:
    7
    Structures and stabilities of cyclohexadienyl radicals".
     
  26. Mezitilar

    Mezitilar

    Messages:
    350
    Likes Received:
    14
    Trophy Points:
    6
    To Top To Contents.
     
  27. Fenrigor

    Fenrigor

    Messages:
    875
    Likes Received:
    29
    Trophy Points:
    3
    The method of Claim 1 wherein the chemical reagent is a stoichiometric compound capable of undergoing a finite number of one-electron reduction processes.
     
  28. Kira

    Kira

    Messages:
    606
    Likes Received:
    11
    Trophy Points:
    4
    Ferrocene has proven to be potent inhibitor, reducing the methamphetamine yield to near zero at concentrations as low as 0.
     
  29. Moogujin

    Moogujin

    Messages:
    543
    Likes Received:
    9
    Trophy Points:
    3
    PMC
     
  30. Mugar

    Mugar

    Messages:
    297
    Likes Received:
    21
    Trophy Points:
    2
    The method of Claim 1 wherein the chemical reagent is a stoichiometric compound capable of undergoing a finite number of one-electron reduction processes.
     
  31. Juktilar

    Juktilar

    Messages:
    510
    Likes Received:
    24
    Trophy Points:
    7
    A venture into fundamental strategic research and some of its consequences: The Birch reduction becomes a birth reduction".
     
  32. Akinorn

    Akinorn

    Messages:
    958
    Likes Received:
    24
    Trophy Points:
    0
    This website uses cookies to improve your user experience.
     
  33. Musida

    Musida

    Messages:
    439
    Likes Received:
    33
    Trophy Points:
    3
    Help Learn to edit Community portal Recent changes Upload file.
     
  34. Bamuro

    Bamuro

    Messages:
    304
    Likes Received:
    11
    Trophy Points:
    0
    He suggested the meta attack results from "opposition of the ortho and para initial charge".
     
  35. Jurr

    Jurr

    Messages:
    948
    Likes Received:
    12
    Trophy Points:
    5
    forum? A venture into fundamental strategic research and some of its consequences: The Birch reduction becomes a birth reduction".
     

Link Thread

  • Python quadratic formula function

    Gonos , Saturday, March 12, 2022 6:47:34 PM
    Replies:
    26
    Views:
    6480
    Kesho
    Monday, February 28, 2022 9:17:16 AM
  • Ford ranger turn signal blinking fast

    Mikajora , Sunday, February 27, 2022 4:38:28 PM
    Replies:
    11
    Views:
    685
    Mazilkree
    Sunday, March 6, 2022 11:42:52 AM
  • Best strat pickups

    Faegami , Tuesday, March 8, 2022 7:51:36 AM
    Replies:
    17
    Views:
    6194
    Kazihn
    Friday, March 4, 2022 8:46:20 PM
  • Ski doo mach z 1000 hp

    Mazukazahn , Saturday, March 5, 2022 8:27:09 AM
    Replies:
    20
    Views:
    282
    Mojin
    Monday, March 7, 2022 3:07:54 PM