3-氯喹啉-2,4-二酮不与磷酰氯反应,但是,在N,N-二甲基苯胺存在下会形成2,4-二氯喹啉和/或4-氯喹啉-2-酮。与这些化合物一起,分离出少量的4-羟基喹啉-2-酮的新型磷酸二氢酯。我们概述了一个简单的步骤,可以以中等到良好的产率制备这些化合物。所有化合物均通过1 H和13 C NMR,IR,EI-MS和ESI-MS光谱进行表征,在某些情况下通过31 P NMR光谱进行表征。
None of these selected derivatives showed significant acute toxicity against MRC-5 cells or early signs of genotoxicity in the Vitotox™ assay at the active concentration range. The structure activity study relation provided some insight in the further favourable substitution pattern at the 4-hydroxyquinolin-2(1H)-one scaffold and finally 6-fluoro-4-hydroxy-3-phenylquinolin-2(1H)-one (38) was selected as
Nitration of 3-substituted-4-hydroxy-2(1H)-quinolones 1 with nitric acid leads either to 3-nitro- 2 or 3-hydroxyquinolinediones 3, depending on the reaction conditions. 3-Substituted-3-hydroxyquinolinediones 3 are also obtained by oxidative hydroxylation with peracetic acid. Amination of 3-substituted-3-chloroquinolinediones 4 with ammonium hydroxide predominantly leads again to 3-substituted-3-hy
3-Substituted 4-hydroxy-2(1 H)-quinolones 3, 5, 7 are halogenated with bromine or sulfuryl chloride to yield the quinolinediones 9 or 10. Reaction of 3, 5, 7 with chloroform gives the dichloromethyl quinolinediones 11. Halogen exchange leads from the chloro quinolinediones 10 to fluoro quinolinedones 12 and to azido quinolinediones 13. Similarly the dichloro quinolinedione 10 an reacts to the difluoro quinolinedione 14, which is reduced to the 3-fluoro-4-hydroxyquinolone 16 and reacts again with sulfuryl chloride to give the mixed 3-chloro-3-fluoroquinolinedione 15.
4-Hydroxy-2-quinolones. 2. Simple synthesis of arboricine
作者:P. A. Bezuglyi、I. V. Ukrainets、V. I. Treskach、A. V. Turov
DOI:10.1007/bf00767007
日期:1992.4
Reaction of Some 2-Quinolone Derivatives with Phosphoryl Chloride: Synthesis of Novel Phosphoric Acid Esters of 4-Hydroxy-2-quinolone
not react with phosphoryl chloride, however, 2,4-dichloroquinolines and/or 4-chloroquinolin-2-ones are formed in the presence of N,N-dimethylaniline. Along with these compounds, small quantities of novel dihydrogen phosphates of 4-hydroxyquinolin-2-ones were isolated. We outline a simple procedure that allows for the preparation of these compounds in moderate to good yields. All compounds were characterized
3-氯喹啉-2,4-二酮不与磷酰氯反应,但是,在N,N-二甲基苯胺存在下会形成2,4-二氯喹啉和/或4-氯喹啉-2-酮。与这些化合物一起,分离出少量的4-羟基喹啉-2-酮的新型磷酸二氢酯。我们概述了一个简单的步骤,可以以中等到良好的产率制备这些化合物。所有化合物均通过1 H和13 C NMR,IR,EI-MS和ESI-MS光谱进行表征,在某些情况下通过31 P NMR光谱进行表征。