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Preparation of generally and specifically labeled phencyclidine

, : Preparation of generally and specifically labeled phencyclidine. Journal of Labelled Compounds and Radiopharmaceuticals 13(3): 445-448

Radioactive phencyclidine [1-(1-phenylcyclohexyl)piperidine,1] is required for physiological and radioimmunoassay studies on this pharmacologically important compund. Condensation of cyclohexanone cyanohydrin with 1,2,5,6-tetrahydropyridine produced 1-(1,2,5,6-tetrahydropyridino)cyclohexanecarbonitrile 4 in 84% yield. Phenylmagnesium bromide and 4 yielded 1-(1-phenylcyclohexyl)-1,2,5,6-tetrahydropyridine, which in turn was catalytically reduced with 3H to 1 labeled at positions 3 and 4 of the piperidine ring and having specific activity 23.75 Ci/mmol.

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