Jan 6, 2019
Filtration under inert gas.
The basic setup consists of a Schlenk flask, a Schlenk frit, a cap and a cannula to transfer the slurry and the solvents.
The contents of the flask is transferred to the filter through rubber septa using a wide steel needle, a cannula. Using this technique the presence of air, especially oxygen could be avoided, so oxygen and moisture sensitive compounds could be filtered from the reaction mixture. The bottom of the filter is connected to an empty schlenk flask under vacuum, that maintains the suction and the filtration is done easily as seen on the above pictures. The plastic needle was used to transfer excess solvent to the flask to wash out any remaining product from the glassware.
