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A novel carboxylation radiosynthesis methodology is described starting from cyclotron-produced [ 11 C]CO 2 and fluoride-activated silane derivatives. Six carbon-11 labelled carboxylic acids were obtained from their corresponding trimethylsilyl and trialkoxysilyl precursors in a one-pot labelling methodology. The radiochemical yields ranged from 19% to 93% within 12 minutes post [ 11 C]CO 2 delivery with a trapping efficiency of 21-89%.

Carbon-11 carboxylation of trialkoxysilane and trimethylsilane derivatives using [11C]CO2

Carbon-11 carboxylation of trialkoxysilane and trimethylsilane derivatives using [¹¹C]CO₂