- Synthesis and antioxidant properties of some novel 1,3,4,2-oxadiazaphosphepino[6,7-c]quinolinones and pyrazolo[3,4:4′,3′]quinolino[5,1-c][1,4,2]oxazaphosphinine
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A series of novel 1,3,4,2-oxadiazaphosphepino[6,7-c]quinolinones 3–5, 9, and 11 have been synthesized from treatment of 4-hydroxy-1-methyl-3-[1-(2-phenylhydrazinylidene)ethyl]quinolin-2(1H)-one (2) with some phosphorus sulfides, diethyl phosphite and phen
- Hassan, Mohamed M.,Abdel-Kariem, Somaia M.,Ali, Tarik E.
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p. 866 - 873
(2017/07/22)
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- Ring closure reactions of 3-arylhydrazonoalkyl-quinolin-2-ones to 1-aryl-pyrazolo[4,3-c]quinolin-2-ones
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4-Hydroxy-3-arylhydrazonoalkyl-2-quinolones 6 or reactive derivatives such as 3-arylhydrazonoalkyl-4-tosyloxy-2-quinolones 7 or 4-chloro-3- arylhydrazonoalkyl-2-quinolones 14, which are obtained via 3-acyl-4- hydroxyquinolones 4, 10 or 3-phenylaminomethylene-quinoline-2,4-diones 12, cyclize in excellent yields to 1-aryl-pyrazolo[4,3-c]quinolin-4-ones (11). The cyclization conditions were investigated by differential scanning calorimetry (DSC).
- Stadlbauer, Wolfgang,Hojas, Gerhard
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p. 681 - 690
(2007/10/03)
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- Synthesis, crystal structure and spectroscopic studies of 3- hydrazono- and 3-hydroxyiminoquinolin-2-ones
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3-(Hydrazonoethyl)quinolinones 6-11, 13 and 3- (hydroxyiminoethyl)quinolinones 14, 15 are prepared by a condensation reaction of 3-acetylquinolinones 4, 5 with a variety of 1,2-(bis)nucleophiles. The structures of the isolated compounds have been elucidated using 1H and 13C nmr spectroscopy. X-ray diffraction studies of compound 14 were also performed.
- Mitsos, Christos,Petrou, John,Igglessi-Markopoulou, Olga,Markopoulos, John
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p. 881 - 887
(2007/10/03)
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