any one help me with how many cans of r-12 one would need for chili

The Birch process is a name reaction that uses alkali metal in liquid ammonia or methylamine (not aqueous) I mean cryogenic gas. Like reaction temperatures of -40C. This is a strong reductant that is adapted to the reduction of ephedrine.

The ammonia solution is blue due to solvated electrons from the alkali metal. These electrons do the reducing. So Freon CANNOT be used in the place of ammonia for this reaction. It will NOT solvate electrons.
oops guess i should have read this

However Freon is used in other synths as an extracting solvent, because it is unreactive, not explosive like ether and it evaporates at room temp quickly.

Freon is bad for the ozone layer so all chemists that use it shall rot in hell. And I'll make sure if I ever meet

Thanks for coming out.