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- W1981569665 abstract "Summary The electrochemical reduction of 1,1′-dioxy-2,2′-diphenyl-Δ3.3′-bi-3H-indole (I) in dimethylformamide (DMF) solution has been studied at mercury and platinum electrodes in the presence and absence of protonating agents. Voltammetric, controlled-potential coulometric, e.s.r. and u.v. spectroscopic techniques were employed in the study. In an aprotic medium (DMF with tetraethylammonium perchlorate as supporting electrolyte) the reduction proceeds in two reversible one-electron steps: first to a very stable anion radical, identified by e.s.r. spectrum, and then to the di-anion. In the presence of a protonating agent (BH) (pKBHd>15) the second reduction step shifts to more positive potentials, while the first is unchanged. With a large amount of (BH) a single two-electron step is observed, the corresponding 1,1′-di-hydroxy-2,2′-diphenyl-3,3′-bi-indole (II) being the reduction product. In the presence of a stronger protonic source (AH) (pKAHd" @default.
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- W1981569665 date "1974-04-01" @default.
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- W1981569665 title "Electrochemical behaviour of 1,1′-dioxy-2,2′-diphenyl-Δ3.3′-bi-3H-indole in dimethylformamide. Effect of protonating agents of various strengths" @default.
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- W1981569665 doi "https://doi.org/10.1016/s0022-0728(74)80250-0" @default.
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