名称:
Synthesis and electrochemical properties of benzo[b]naphtho[2,3-e][1,4]-dioxin-6,11-quinones and their N,N'-dicyano quinone diimine derivatives
摘要:
The reaction of 2,3-dichloro-1,4-naphthoquinone (1) and catechols 2 in pyridine affords a series of substituted benzo[b]naphtho[2,3-e][1,4]dioxin-6,11-quinones 3. The latter compounds are transformed to the corresponding N,N'-dicyano quinone diimines 4, by treating them with N,N'-bis(trimethylsilyl)carbodiimide. The electrochemical studies of compounds of the type 3 and 4 in DMF and CH2Cl2, respectively, by means of cyclic voltammetry are reported. The experimental reduction potentials provide information on electron-electron repulsion in the dianionic states of 3 and 4, and hence on their potential use as acceptor components in charge-transfer complexes and organic conductors.