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Synthetic Reductions in Clandestine Amphetamine and Methamphetamine Laboratories: A Review
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Post 450229
J. Pharm. Soc. Jpn. 74, 413-416(1954)
J. Org. Chem. 15, 8-14 (1949)
Chem. Ber. 65, 660-666 (1932)
Post 402025
Tetrahedron 24, 5677-5690 (1968)
Rusznak et al., Resolution of Phenylisopropylamines, Hung. Teljes, 12,208 (Cl.C07B), 28 Sep. 1976, Appl. 1,516, 08 Nov. 1974; C.A. 85: 192337q, p. 518 (1976).Phenylisopropylamines and phenylisopropylmethylamines and various substituted amines were resolved with 0.5 mole tartaric acid in benzene-water containing 0.5 mole sodium hydroxide or potassium hydroxide by selective extraction of either enantiomer.A mixture of 0.1 mole (13.52 g.) phenylisopropylamine (or 14.92 g. methamphetamine base) in 60 ml benzene, 0.05 mole d-tartaric acid (7.50 g.) in 30 ml water, and 2 g sodium hydroxide (reagent grade or titrated equivalent) in 3 ml water was kept 4 hours with intermittent shaking, and the organic phase evaporated to give 98% L-phenylisopropylamine. The aqueous phase was extracted with benzene at pH 13 and evaporated to give 96% D-enantiomer. From Procedures for the Resolution of Racemic Amphetamines (https://www.thevespiary.org/rhodium/Rhodium/chemistry/amphetamine.resolution.html)
Rusznak et al., Resolution of Phenylisopropylamines, Hung. Teljes, 12,208 (Cl.C07B), 28 Sep. 1976, Appl. 1,516, 08 Nov. 1974; C.A. 85: 192337q, p. 518 (1976).Phenylisopropylamines and phenylisopropylmethylamines and various substituted amines were resolved with 0.5 mole tartaric acid in benzene-water containing 0.5 mole sodium hydroxide or potassium hydroxide by selective extraction of either enantiomer.A mixture of 0.1 mole (13.52 g.) phenylisopropylamine (or 14.92 g. methamphetamine base) in 60 ml benzene, 0.05 mole d-tartaric acid (7.50 g.) in 30 ml water, and 2 g sodium hydroxide (reagent grade or titrated equivalent) in 3 ml water was kept 4 hours with intermittent shaking, and the organic phase evaporated to give 98% L-phenylisopropylamine. The aqueous phase was extracted with benzene at pH 13 and evaporated to give 96% D-enantiomer. From
Procedures for the Resolution of Racemic Amphetamines
Or if SWIM wan't make Dex should do it with another method like this one.
Preparation of Optically pure Amphetamines by the way of alpha-Methylhydrocinnamic Acid
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Method of manufacturing high purity oximes from aqueous hydroxylamine and ketones US 6235935