Swim gets slightly confused around step 6. When the mixture is flooded with the HCl it should seperate to an aqueous layer (top) and oil layer (bottom). The top layer is removed and then extracted (3x) with the DCM. These colletive extractions are then returned to the oil layer that was created when the HCl was flooded to the mixture.
This is a simple acid base extraction.
Look under https://www.thevespiary.org/rhodium/Rhodium/chemistry/equipment/rextal.a-b.basics.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/equipment/rextal.a-b.basics.html)
The Ketone isn´t an amine so it can´t form a freebase. No salt will be formed if HCL dumped in.
This means it isn´t soluble in water.
The writeup says to extract the whole flooded mixture to be on the save side. But I think there shouldn`t be
any Ketone in the water layer. But better ask a more
experienced bee- maybe I´m wrong.
Keep only the bottom layer(DCM with Ketone) of each wash
and combine them.
Hope Swim is on track so far! Now Swim has come across lots of different ideas on the Washes. Swim has read on many posts that the NaCl wash (gentle or violent shaking?) can be left out, and can increase yields. Please keep in mind that this would be Swim's first dream, so Swim would appreciate some Bee's input to help a newbee.
Normally the NaCl (Brine) wash is the last one because
it pre dries your solution before MgSO4 dumped in.
After the NaOH wash you need to dry with water to
eliminate any traces of NaOH in your DCM.
So as said before it´s better to wash with NaCl after
the lye wash.