Step by Step
(Time-sensitive)
Follow the instructions in your literature procedure. For an aqueous workup of most organic compounds this will involve:
- Diluting the reaction mixture with a
solvent for workup
(this is the
organic layer).
- Washing the Organic Layer with various aqueous solutions. Some of the byproducts generated during the reaction will
be neutralized or removed by dissolving in the
aqueous layer. Here are some
examples. Ideally, the two layers will be clearly visible. If the result is one cloudy layer, you have an
emulsion
- Drying the Organic Layer with one of the
drying agents
- Filtering off the drying agent.
-
Rotoevaporation to remove the solvent
The residue left is the crude product, ready for diagnosis. Certain types of compounds are more difficult to isolate than
others--if your product might be volatile, soluble in water, charged at low or high pH (e.g. an amine or a carboxylic
acid), unstable, or possesses stench, see
How to Handle.