1981
DOI: 10.1002/jlac.198119810210
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Mehrstufige Redoxsysteme, XXVIII. Ein Butatrien und ein [4]‐Radialen mit gekreuzt konjugierten Doppelbindungen als Endgruppen; Synthese und Voltammetrie

Abstract: Es wird die Synthese des Butatriens 2 und seine Dimerisierung zum Radialen 4 beschrieben. Beide Polyene können zweistufig reduziert und oxidiert werden. Potentiale und KSEM‐Werte von 2 unterscheiden sich kaum von denen des analogen Butadiens 1a. Ähnliches gilt für die Paare 11 und 3 sowie 12 und 13. Die Redoxeigenschaften von 4 werden mit denen der Radialene 5 und 14 verglichen.

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Cited by 18 publications
(2 citation statements)
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“…[3]/[4]radialene derivatives containing three/four quinone units,f or example,t ris(3,6-di-tert-butyl-4-oxo-2,5-cyclohexadien-1-ylidene)cyclopropane 2 [16] and tetrakis(3,6-di-tert-butyl-4-oxo-2,5-cyclohexadien-1-ylidene) cyclobutane 3 [17] (Figure 1) have been synthesized,a nd both showedi nteresting optical and redox properties. Now,o ur particulari nterest is their analog, the hexakis(3,6-di-tert-butyl-4-oxo-2,5-cyclohexadien-1ylidene) cyclohexane (Figure 1), which has never been studied.…”
mentioning
confidence: 99%
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“…[3]/[4]radialene derivatives containing three/four quinone units,f or example,t ris(3,6-di-tert-butyl-4-oxo-2,5-cyclohexadien-1-ylidene)cyclopropane 2 [16] and tetrakis(3,6-di-tert-butyl-4-oxo-2,5-cyclohexadien-1-ylidene) cyclobutane 3 [17] (Figure 1) have been synthesized,a nd both showedi nteresting optical and redox properties. Now,o ur particulari nterest is their analog, the hexakis(3,6-di-tert-butyl-4-oxo-2,5-cyclohexadien-1ylidene) cyclohexane (Figure 1), which has never been studied.…”
mentioning
confidence: 99%
“…Compound 4c in THFs hows an intense absorption band with maximum (l max )a t4 06 nm, together with two shoulders at 314 and 487 nm (Figure 4a). Compared with triquinocyclopropane 2 [16] (l max = 685 nm) and tetraquinocyclobutane 3 [17] (l max = 570 nm), the absorption spectrum is blueshifted (Table S2 in SI), presumably due to its distorted conformation. Compound 4c showed four reduction waves in CV and DPV measurements with half-wavep otential E 1/2 red at À0.87, À1.14, À1.31, and À1.45 Vv s. Fc + /Fc but withouta no bservable oxidation wave due to its electron-deficient nature (Figure 4b and Figure S7 in SI).…”
mentioning
confidence: 99%