The Vespiary

The Hive => Newbee Forum => Topic started by: t4091 on November 07, 2002, 08:59:00 PM

Title: explanation of Al Hg Amalgum
Post by: t4091 on November 07, 2002, 08:59:00 PM
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.
Title: http://www.rhodium.ws/chemistry/alhg.osmium.html
Post by: Rhodium on November 07, 2002, 09:12:00 PM

https://www.thevespiary.org/rhodium/Rhodium/chemistry/alhg.osmium.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/alhg.osmium.html)

Title: Al/ Hg basics
Post by: Protium on November 07, 2002, 09:24:00 PM

https://www.thevespiary.org/rhodium/Rhodium/chemistry/alhg.osmium.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/alhg.osmium.html)



+ 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  ;D

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