- 7,12-diphenylbenzo[k]fluoranthene derivatives with electron donor-receptor structures and preparation method and application thereof
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The invention belongs to the technical field of application of optoelectronic materials, and particularly relates to 7,12-diphenylbenzo[k]fluoranthene derivatives with electron donor-receptor structures and a preparation method and application thereof. Hi
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Paragraph 0058; 0064; 0070
(2018/03/24)
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- Heterocyclic Compounds with Bridgehead Nitrogen Atoms. Part 10. Synthesis in the Pyrroloquinolizine Series (Cyclazinones and Cyclazinylium Salts) starting from Quinolizines
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Ethyl 1-oxo-1H-pyrroloquinolizine-2-carboxylate was obtained by thermal cyclisation of diethyl quinolizin-4-ylidenemalonate and the corresponding 3-oxo-3H-1-carboxylate by reaction of 3-hydroxyquinolizinylium bromide with sodium carbonate and ethyl propynoate in boiling nitrobenzene.These isomeric esters were hydrolysed and decarboxylated to give 1H- and 3H-pyrroloquinolizin-1- and -3-ones and were converted into various pyrroloquinolizinylium salts, including the parent compound.The n.m.r. spectra and chemical properties of the pyrrolo quinolizinylium ion are consistent, for the most part, with a structure in which the 1,2-bond is part of the aromatic system.Nucleophilic attack on this ion occurs at C-3 and, to a lesser extent, at C-5.Among the compounds obtained by such reactions was 5H-pyrroloquinolizin-5-one, thus leaving the corresponding 4-oxo-4H-compound as the only member of this isomeric series that remains unknown.
- Farquhar, David,Gough, Thomas T.,Leaver, Derek,Miller, James F.,Dick, James W.,Jessep, Michael A.
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p. 2553 - 2562
(2007/10/02)
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