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Metathetical conversions of [11C]haloalkanes into useful labeling synthons by passage over heated silver(I) or sodium salts into (A,B) [11C]methyl triflate; (C) [11C]iodomethane; (D) [11C]nitroalkanes; (E) [11C]methanethiol; (F) [11C]mesyl chloride; and (G) [methyl-11C]methyl isocyanate.
