J Org Chem. 2004 Aug 6;69(16):5490-3. Birch reduction of (-)-ephedrine. Formation of a new, versatile intermediate for organic synthesis. Zvilichovsky G(1 ), Gbara-Haj-Yahia I. Author information: (1)Department of Organic Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel. gury@vms.huji.ac. il. PS: ephedrine/psuedoephedrine freebase = 165.24 g/mole. Li=6.94 g/mole 10 g Li soluble in 100g NH3 nh3~5lb/gallon .68g /ml (according to msn encarta) therefore: For a 28.8 g birch using PURE psuedo freebase you would need: 2.41 g li or approx 2.57 aa strips 39 ml anhydrous nh3 a really good fume hood. The 2450's . Oct 12, 2013 . Methamphetamine Synthesis. N-methyl-1-phenylpropan-2-amine's production begin with either Phenyl-2-Propanone (P2P) or with ephedrine or pseudoephedrine. The principal methods used are the Nagai method, Birch's reduction or the semplifyed shake'n'bake. Jul 8, 2004 . The reduction of (−)-ephedrine by lithium in liquid ammonia resulted in the formation of S-1-(1,4-cyclohexadien-1-yl)-N-methyl-2-propanamine. In addition to the reduction of the aromatic ring, the hydroxy group was reduced as well. The resulting 1,4-cyclohexadienyl group is a potentially versatile . ordinaryguy (Stranger) 05-18-04 09:41. No 507921, "True Blue" NH3/Li reduction ie birch. This process assumes the reader has some experience regarding a NH3 /Li reduction of ephedrine hydrochloride or ephedrine freebase. The quantities of reactants listed are based on 60 grams of clean ephedrine freebase and the . Ephedrine is a medication and stimulant. It is often used to prevent low blood pressure during spinal anesthesia. It has also been used for asthma, narcolepsy, and obesity but is not the preferred treatment. It is of unclear benefit in nasal congestion. It can be taken by mouth or by injection into a muscle, vein, or just under the . Nov 12, 2004 . The reaction was stopped with this addition. Birch with will reduce alchols. However I beleive the toluene actually 'quenched' your reaction. Thus not reduceding your ephedrine to methamphetamine. But to hey Suzy. Might be clean enought for ya to do RP/i reaction or hypo. You cannot over cook a birch . The Birch Reaction: Methamphetamine from (pseudo)ephedrine. Procedure. All chemicals were reagent grade, with no special treatment of the tetrahydrofuran ( THF), and the atmosphere above the condensed ammonia was not flushed with nitrogen gas. A three-neck flask was cooled in a dry ice/acetone bath. A condenser . In victorian chemists, it is safe to get 2 packets of 30's per person so a couple of people shopping around for a couple of weeks can slowly get a suitable amount of ephedrine. A packet of 30's is 30 * 60mg = 1.8 g suzy which converts to 1.3 g end result minimum. 60's and 90's used to be available but I'm afraid that most of us .The history and mythology of herbs and herbalism: Although interest in the medicinal use of herbs is growing all the time and many applications may appear to be. Listing of Monographs Pre-Cleared Information Pre-cleared information (PCI) is any form of information supporting the safety, efficacy or quality of a medicinal. Ephedrine is an expensive ingredient usually used in the manufacturing of cat and cocaine. Overview Methamphetamine (also known as speed, meth, crystal, crank, and sometimes confusingly called ice) is a chemical widely known for its stimulant properties on. Ginseng (/ ˈ dʒ ɪ n s ɛ ŋ /) is any one of the species of slow-growing perennial plants with fleshy roots, belonging to the genus Panax of the family Araliaceae. Ephedrine is a medication and stimulant. It is often used to prevent low blood pressure during spinal anesthesia. It has also been used for asthma, narcolepsy, and. The use of δ 13 C isotope ratio mass spectrometry for methamphetamine profiling: Comparison of ephedrine and pseudoephedrine-based samples to P2P-based samples. Earlier this week the Australian Crime Commission released the Illicit Drug Data Report for the 2009-2010 financial year. The report indicated the. The Ephedra plant has been identified as an excellent source of ephedrine and pseudoephedrine, both of which can be chemically reduced to form the widely abused. MALAYSIA, Selangor (Headquarter) Prima Inter-Chem Sdn Bhd (117521-W) No.4, Jalan Sungai Kayu Ara 32/38, Taman Berjaya Industrial Park, Seksyen 32,