Year-end Sale % OFF 
Abstract
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.
Highlights
[31]properties contributed to the to buildand such stable cationic multistage special such as desire conductivity ferro-magnetism of severalredox multisystems by connecting redox systems with an extremely stable carbocation and examining stage redox systems [31] contributed to the desire to build such stable cationic multistage how the redox properties would be changed. In this direction the research must be mentioned which took into account redox properties of the ferrocene and extreme stabilities of the di(1-azulenyl)methylium units [32]
Due to the stabilizing effect of the redox systems by connecting redox systems with an extremely stable carbocation and examining how the redox properties would be changed. In this direction the research must be mentioned which took into account redox properties of the ferrocene and extreme sta9 of 21 bilities of the di(1-azulenyl)methylium units [32]
From the data in Scheme 20 we can see the high difference between the pKR+ for triphenylme(prepared from tetra-chloro-cyclo-propene and AlC13 ) with three molar equivalents of guathylium and the tri(azulen-1-yl)methylium cation as compared with the difference beiazulene in dichloromethane at −70 ◦ C [54]
Summary
Is naphthalene’s isomer, built from a fusion cyclopentadiene and cycloheptatriene This planar compound obeysofHuckel’s rule, it possesses a heptatriene rings. 5-atom ring, the azulene can can be regarded as the fusion of a 6 π-electron cyclopentadienyl anion and a 6 π-electron. Symmetry 2021, 13, 526 be regarded as the fusion of a 6 π-electron cyclopentadienyl anion and a 6 π-electron tropylium cation (Scheme 2). In comparison with other tionsdifferent (2hydrocarbons, and 6)charges, while naphthalene twice has four identical positions. These posizenoid the difference between the small highest occupied molecular orhydrocarbons, the difference between the small highest occupied molecularwith orbital–lowest tions have different charges, different reactivity.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
