The reaction of diethyl fluoronitromalonate with base and formaldehyde provided a convenient synthesis of 2-fluoro-2-nitro-l, 3-propanediol. This diol reacted with triflic anhydride to give 2-fluorc-3-hydroxy-2-nitro-l-propyl triflate and 2-fluoro-2-nitro-l, 3- propylene ditriflate. The monotriflate reacted with base to give 3-fluoro-3-nitrooxetme. The ditriflate underwent displacement reactions with sodium azide, 2-fluoro-2, 2-dinitroethanol, ...