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t4091 (Stranger) 11-07-02 20:59 No 377558 |
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explanation of Al Hg Amalgum | Bookmark | |||||
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Can someone explain what happens in the reaction, and what are the best chemicals to clean and extract the freebase after the amalgum is finished. |
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Rhodium (Chief Bee) 11-07-02 21:12 No 377561 |
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http://www.rhodium.ws/chemistry/alhg.osmium.html | Bookmark | |||||
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https://www.rhodium.ws/chemistry/alhg.os |
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Protium (Hive Bee) 11-07-02 21:24 No 377567 |
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Al/ Hg basics | Bookmark | |||||
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https://www.rhodium.ws/chemistry/alhg.os + a whole lot more in the search engine I'm kind of 'on the fence' as to whether or not this should be in the newbee forum, but today is a great day..... The simplest explanation of what is going on, and I assume you are talking about the nitro Al/Hg, is that the nitromethane is reduced to a primary amine (methylamine) by the amalgamated aluminum which condenses with the ketone to form an imine. This imine is further reduced to the secondary amine, also by the Al/Hg. Give you three guesses what the secondary amine is The best (most commonly preferred) solvents to use are toluene or xylene, and an NaOH wash, a brine (saturated salt solution) wash, and a water wash are customary. Some people like to dry the solvent, prior to making the hydrochloride salt, with baked epsoms; but if your yeilds are good you probably won't need to bother. EDIT: However, my timing seems to be horrible. Pr(+)tium |
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