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The electrochemical behavior of pillar[5]arene (P[5]A) and of its reaction products with Ag+ and Cu2+ ions has been investigated using cyclic voltammetry, optical methods and transmission electron microscopy (TEM). Stepwise oxidation of hydroquinone units of P[5]A molecule is guided by self-assembling and acid-base interactions. From one to three hydroquinone units per P[5]A molecule are oxidized...
Electrochemical syntheses of 2-indolyl-5-arylsulfonyl-p-benzoquinone derivatives were carried out in two successive oxidation steps. The first involves the oxidation of hydroquinone, 4-(piperazin-1-yl) phenol) and 1-(4-(4-hydroxyphenyl) piperazin-1-yl) ethanone in the presence of arylsulfinic acids as nucleophiles. Our voltammetric data indicate that electrochemically generated p-benzoquinone participates...
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