Elemental Sulfur as Reaction Medium for the Synthesis of Fused Nitrogen Heterocycles by Oxidative Coupling between Cycloalkanones and Nitrogen Nucleophiles
作者:Thanh Binh Nguyen、Pascal Retailleau
DOI:10.1002/adsc.201700919
日期:2017.11.10
Molten elemental sulfur was found to be an excellent reaction medium for oxidative coupling between bis-aza nucleophiles and cycloalkanones to the fused diaza heterocycles. No extensive aromatization was observed when cyclohexanone was used. These reaction conditions tolerate a wide range of functional groups and are applicable to oxidation sensitive o-phenylenediamines.
作者:Meng-Yang Chang、Tein-Wei Lee、Ru-Ting Hsu、Tzu-Lin Yen
DOI:10.1055/s-0030-1260147
日期:2011.10
Substituted tricyclic or tetracyclic quinoxalines, tricyclic pyridoquinoxalines and bis-quinoxalines were synthesized in high yields starting from cyclic ketones by the α-bromination of cyclic ketones with N-bromosuccinimide (NBS) followed by condensation of the resulting α-bromo ketones with 1,2-diaminobenzene, 3,4-diaminopyridine, or 3,3′-diaminobenzidine. condensation - halogenation - tandem reactions
Ketones as a new synthon for quinoxaline synthesis
作者:Chan Sik Cho、Wen Xiu Ren、Sang Chul Shim
DOI:10.1016/j.tetlet.2007.05.044
日期:2007.7
o-Phenylenediamines react with an array of ketones in PEG-400 at 60 degrees C under an atmosphere of air in the presence of KOH to afford the corresponding quinoxalines in good yields. (c) 2007 Elsevier Ltd. All rights reserved.
Oxidation of vicinal diols to .alpha.-dicarbonyl compounds by trifluoroacetic anhydride-activated dimethyl sulfoxide
作者:Catherine M. Amon、Martin G. Banwell、G. Lance Gravatt
DOI:10.1021/jo00231a005
日期:1987.10
Utsukihara, Takamitsu; Koshimura, Masahiro; Kitsuta, Kazunori, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2016, vol. 55B, # 12, p. 1495 - 1502
作者:Utsukihara, Takamitsu、Koshimura, Masahiro、Kitsuta, Kazunori、Sato, Akinori、Matsushita, Masatoshi、Takahashi, T. Tomoyoshi、Horiuchi, C. Akira