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Introduction of [18F]fluoride ion into the aromatic core of phenylazocarboxylic esters was achieved in only 30 seconds, with radiochemical yields of up to 95 % (85(±10) %). For labeling purposes, the resulting 18F‐substituted azoester can be further converted in radical‐arylation reactions to give biaryls, or in substitutions at its carbonyl unit to produce azocarboxamides.
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