... an unsymmetrical phosphate bearing a fluoroalkyl group is diethyl 2-fluoroethyl phosphate (EtO) 2 P(O)OCH 2 CH 2 F, prepared by Saunders et al. ... b ... or 0.5 mol) was added dropwise to a solution of phosphorus oxychloride (0.25 mol) and fluoroalcohol (0.25 or 0.5 mol) in Et 2 O ...