{HEAD ~ This mixture} is stirred for {TAIL ~ approximately 1 hour} and is then treated with a saturated ammonium chloride and extracted into a non polar solvent, such as, for example, diethyl ether 
is stirred for
{ HEAD ~ This mixture } is stirred for { TAIL ~ approximately 1 hour } and is then treated with a saturated ammonium chloride and extracted into a non polar solvent , such as , for example , diethyl ether
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH