Product scope with respect to different substituted phenyl-Tzs for the Cu-mediated ¹⁸F-fluorination from stannane precursors.

R	Compound	Position
	(-p, -m, -o)	4 (-p)	5 (-m)	6 (-o)
–CH3	[18F]14	—a	14 ± 3b	—c
–OCH3	[18F]15	4 ± 1	17 ± 3b	—c
–NHCOCH3	[18F]16	—a	31 ± 3b	—d
–CONH2	[18F]17	—a	24 ± 2b	—d
–CONHCH3	[18F]18	—a	20 ± 3b	—d

^aStannane precursor could not be synthesized.

^bRCCs were determined by radio-HPLC and radio-TLC (n = 3).

^cDecomposed during the Cu-mediated ¹⁸F-fluorination.

^dIodo-Tz intermediate could not be synthesized.