Polymers with a conjugated bond system in the macromolecular chain—XXXII. Synthesis and properties of polyhexyne-1

Берлин, А. А.; Vainshtein, E.F.; Cherkashin, Μ. I.; Moshkovskii, Yu. Sh.

doi:10.1016/0032-3950(64)90110-8

Cited by 3 publications

(1 citation statement)

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“…It was then chromatographed on alumina with benzene and recrystallized from benzene-ethanol, mp 91 ~ 9-Ethylcarbazole was obtained from Southern Dyestuff and purified by chromatographing with benzene on neutral alumina to give mp 680-69 ~ 9-Isopropylcarbazole (Eastman Chemical Company, mp 118~176 9-phenylcarbazole (K & K Laboratories, mp 940-95 ~ and 9-vinylcarbazole (K & K Laboratories, mp 91~ ~ were used directly without further purification. 9-Nitrosocarbazole was prepared by the method of Eikhman et al (15) to give mp 81 ~ 9-acetylcarbazole (mp 780-79 ~ and 9-benzoylcarbazole (mp 98~ ~ were prepared by the method of Berlin (16). 9,9'-Dicarbazyl was synthesized by the method of Perkin and Tucker (4), mp 226~ ~ 3,3'-Dicarbazyl was unambiguously synthesized by the method of Tucker (5) and purified by sublimation to give mp 375 ~ ~ 3 ~ (measured by comparison with indicating liquid supplied by the Tempil Corporation).…”

Section: Methodsmentioning

confidence: 99%

Anodic Oxidation Pathways of Carbazoles

Ambrose

Nelson

1968

J. Electrochem. Soc.

421

237

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Electrochemical and spectroscopic techniques have been employed in elucidating the anodic oxidation pathways of carbazole and several N‐substituted derivatives. For carbazole and the N‐alkyl or N‐aryl derivatives, ring‐ring coupling is the predominant decay pathway of the carbazole cations; the coupling rates are extremely rapid. N‐N coupling is observed initially for carbazole, but in long‐time electrolysis it is of little consequence. The oxidation products have been synthesized by chemical means and compared with the species formed electrochemically by matching of cyclic polarograms and visible absorption spectra. Molecular orbital calculations give a qualitative picture of active sites with regard to follow‐up coupling reactions in the carbazole series. N‐vinyl, N‐acetyl, N‐benzoyl, and N‐nitroso carbazole were investigated briefly but found to be extremely complicated.

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Section: Methodsmentioning

confidence: 99%