Studies on the syntheses of heterocyclic compounds. Part CCCLXXXII. Phenolic oxidative coupling of reticuline by use of various reagents

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Abstract
The phenolic oxidative coupling of reticuline (III) to give pallidine (IV) and isoboldine (V), with the reagents potassium ferricyanide, vanadyl trichloride, and silver carbonate, has been examined. The reactions of p-cresol with silver carbonate and with silver nitrate are also described.