... Chem. 1980, 45, 3465 and references cited therein. ... b) Soine,'W. H.'; Salgo, P.; Smith; RV J. Labelled Compd ... 5) Our use of TFA as a solvent for the bromination of 1 was prompted by the recollection of its marked utility in another instance of apo- morphine chemistry (Borgman, RJ ...