title: Synthesis of 5(6H)-phenanthridones using Diels-Alder reaction of 3-nitro-2(1H)-quinolones acting as dienophiles.
abstract: Diels-Alder reactions of 3-nitro-2(1H)-quinolones with 1,3-butadiene derivatives were carried out to give the phenanthridone derivatives under both atmospheric and high pressure conditions. Furthermore, the reactivity of 3-substituted 2(1H)-quinolones acting as a dienophile with 2,3-dimethyl-1,3-butadiene was examined using molecular orbital (MO) calculation.
authors.affiliation: Tohoku Pharmaceutical University, Sendai, Japan. refujita@tohoku-pharm.ac.jp
authors.forename: Reiko
authors.initials: R
authors.lastname: Fujita
authors.forename: Toshiteru
authors.initials: T
authors.lastname: Yoshisuji
authors.forename: Sota
authors.initials: S
authors.lastname: Wakayanagi
authors.forename: Hideaki
authors.initials: H
authors.lastname: Wakamatsu
authors.forename: Hisao
authors.initials: H
authors.lastname: Matsuzaki
mesh_terms: D002070:Butadienes; D002855:Chromatography, Thin Layer; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D009574:Nitro Compounds / Q000138:chemical synthesis*; D010617:Phenanthridines / Q000138:chemical synthesis*; D015363:Quinolones / Q000138:chemical synthesis*; D013055:Spectrophotometry, Infrared
chemical_list: D002070:Butadienes; D007202:Indicators and Reagents; D009574:Nitro Compounds; D010617:Phenanthridines; D015363:Quinolones; C031763:1,3-butadiene