Methylamination of some 3,6-dinitro-1,8-naphthyridines with liquid methylamine – potassium permanganate
作者:Marian Wozniak、Maria Grzegozek、Piotr Surylo
DOI:10.1139/cjc-78-7-950
日期:——
agreement between calculated and observed results. A convenient synthesis of some 2-substituted-3,6-dinitro-1,8-naphthyridines is reported. In a previous paper we reported that 3-nitro-1,8- naphthyridine and some of its 2-substituted derivatives are dehydro-methylaminated in the solution of potassium per- manganate in liquidmethylamine (LMA-PP) to the corre- sponding 4-(methylamino)-3-nitro-1,8-naphthyridines
Regio- and stereoselectivity of the 1,3-dipolar cycloaddition of azomethine ylides to 3-nitro-2(1H)-quinolinone derivatives: A new synthesis of Pyrrolo[3,4-c] quinolines
1,3-Dipolarcycloadditions of different azomethine ylides to 3-nitro-2(1H)-quinolinones were carried out to give 3a-nitro-4-oxo-1,2,3,3a,5,9b-hexahydropyrrolo[3,4-c]quinoline-4-one derivatives in satisfactory yield, in most cases with excellent stereoselectivity. The structure and stereochemistry of cycloadducts were studied in detail by X-ray and NMR spectroscopy methods.
将不同的偶氮甲碱叶立德与 3-nitro-2(1H)-quinolinones 进行 1,3-偶极环加成,得到 3a-nitro-4-oxo-1,2,3,3a,5,9 b -hexahydropyrrolo[3 ,4-c]喹啉-4-酮衍生物的收率令人满意,在大多数情况下具有优异的立体选择性。通过X射线和核磁共振光谱方法详细研究了环加合物的结构和立体化学。
Diastereoselective cycloaddition of isatin derived azomethine ylides to 3-nitro-2(1H)-quinolones
3-dipolar cycloaddition of 3-nitro-2(1)-quinolones with azomethine ylides derived from sarcosine or thiazolidine-4-carboxylic acid and various 1-indole-2,3-diones (isatins) have been investigated. The structure and stereochemistry of the formed cycloadducts were studied in detail by X-ray diffraction and NMR spectroscopy methods.