Molecules 2011-01-01

Synthesis of no-carrier-added 4-[18F]fluorophenol from 4-benzyloxyphenyl-(2-thienyl)iodonium bromide.

Tobias L Ross, Johannes Ermert, Heinz H Coenen

Index: Molecules 16(9) , 7621-6, (2011)

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Abstract

4-[(18)F]Fluorophenol is a versatile synthon for the synthesis of more complex radiopharmaceuticals bearing a 4-[(18)F]fluorophenoxy moiety. In order to prepare 4-[(18)F]fluorophenol in no-carrier-added (n.c.a.) form only a nucleophilic labelling method starting from [(18)F]fluoride is suitable. In this paper a new, two step radiosynthesis starting from 4-benzyloxyphenyl-(2-thienyl)iodonium bromide and [(18)F]fluoride with subsequent deprotection is described, yielding n.c.a. [(18)F]fluorophenol in 34 to 36% radiochemical yield.

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