Workup for Removing Copper Salts

1. 1. Quench rxn w/ sat NH4Cl aq solution. stir up to a few hours at r.t. or 
until the solution becomes a dark blue (indicates complexation).
   2. Remove aq layer and wash organic a few times with sat. NH⁴Cl aq.
2. Wash with aqueous ammonium hydroxide/ammonium chloride (pH 8): to remove copper (I) salts