Synthesis of 6-hetaryl-substituted azulenes and their reactions with 2,6-diphenylpyrylium perchlorate

Dorofeenko, G. N.; Koblik, A. V.; Polyakova, T. I.; Muradyan, L. A.

doi:10.1007/bf00513158

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Charged Hetero-aryls Stabilized By Azulen-1-yl Moieties1

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1984

2021

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Cited by 5 publications

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“…One of the substituents tested for this purpose was azulen-1-yl moiety situated in 2-or 4-position towards the oxonium center of pyranylium. The reported azulenyl-pyranylium system reported earlier described syntheses for 4-(azulen-1-yl) 2,6diphenyl-pyranylium salts [35,36]. Chloro-pyranylium salt or even pyranylium salt were starting compounds.…”

Section: Charged Hetero-aryls Stabilized By Azulen-1-yl Moietiesmentioning

confidence: 99%

Azulene Moiety as Electron Reservoir in Positively Charged Systems; A Short Survey

Razus

2021

Symmetry

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The non-alternant aromatic azulene, an isomer of alternant naphthalene, differs from the latter in peculiar properties. The large polarization of the π-electron system over the seven and five rings gives to azulene electrophile property a pronounced tendency to donate electrons to an acceptor, substituted at azulene 1 position. This paper presents cases in which azulene transfers electrons to a suitable acceptor as methylium ions, positive charged heteroaromatics and examples of neutral molecules that can accept electrons. The proposed product synthesis was outlined and the expected electron transfer was highlighted by analyzing the NMR, UV-Vis spectra and the pKR+ values.

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Section: Charged Hetero-aryls Stabilized By Azulen-1-yl Moietiesmentioning

confidence: 99%