Abstract
The electrochemical reduction of 2‐(l‐naphthyl)‐5‐phenyl‐ and 2,5‐diphenyloxazole in N,N‐dimethylformamide has been studied at platinum and mercury electrodes in the presence and absence of proton donors. Polarographic, potentiostatic, voltammetric, and spectrophotometric techniques were employed in the study. Both compounds are reduced via two polarographic steps. The first is a reversible one‐electron transfer producing a stable anion radical. The second is a reversible one‐electron transfer followed by rapid protonation of the dianion (EC process). The resulting protonated species undergoes a slow irreversible reaction. Addition of hydroquinone as a source of protons enhances the formation of the long term electrolysis product.
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