The Synthesis of [18F]Sulfamoyl Fluorides through Late-Stage 18F/19F Isotopic Exchange

Abstract

Direct [18F]fluorosulfurylation of amines with 1,1-sulfuryl diimidazole did not work well, so the thing finding another pathway to synthesize [18F]sulfamoyl fluoride has been recognized importantly. Here in, we reported that the late-stage 18F/19F isotopic exchange with excellent radiochemical yields. Also, we proposed the efficient protocol via automated radiosynthesis, expanding chemical library of sulfamoyl fluorides.