The combined extracts were washed
with water (3x20 mL), dried over anhydrous Na2SO4 and the solvent
was evaporated. Purification on silica gel with EtOAc:hexane (1:6) as
eluent and the solvent removed in vacuo. The product 4-allyl-1-
ethoxy-2-methoxybenzene receive as a pale yellow oil.