The Chemistry of 2<i>H</i>-3,1-Benzoxazine-2,4(1<i>H</i>)-dione (Isatoic Anhydride). 20<sup>1</sup>. Synthesis and Wittig Reactions of Dimethyl (4-Oxo-1,4-dihydro-Quinolin-2-yl)methanephosphonates
作者:Gary M. Coppola
DOI:10.1055/s-1988-27474
日期:——
Isatoic anhydrides react with dilithiated 2-oxoalkanephosphonates to give dimethyl (4-oxo-1,4-dihydroquinolin-2-yl)methanephosphonates 5. These phosphonates undergo a Horner reaction with aldehydes to produce 2-(1-alkenyl)-4(1H)- quinolinones 10 in good yields.
Palladium-Catalyzed Multistep Tandem Carbonylation/N-Dealkylation/Carbonylation Reaction: Access to Isatoic Anhydrides
作者:Shoucai Wang、Xuan Li、Jiawang Zang、Meichen Liu、Siyu Zhang、Guangbin Jiang、Fanghua Ji
DOI:10.1021/acs.joc.9b02771
日期:2020.2.21
A novel and efficient synthesis of isatoicanhydride derivatives was developed via palladium-catalyzed multistep tandem carbonylation/N-dealkylation/carbonylation reaction with alkyl as the leaving group and tertiary anilines as nitrogen nucleophiles. This approach features good functional group compatibility and readily available starting materials. Furthermore, it provided a convenient approach for
The chemistry of 2<i>H</i>-3,1-benzoxazine-2,4(1<i>H</i>)dione (isatoic anhydrides) 1. The synthesis of<i>N</i>-substituted 2<i>H</i>-3,1-benzoxazine-2,4(1<i>H</i>)diones
作者:Goetz E. Hardtmann、Gabor Koletar、Oskar R. Pfister
DOI:10.1002/jhet.5570120325
日期:1975.6
Three methods for the preparation of N-substituted 2H-3,1-benzoxazine-2,4(1H)diones (isatoicanhydrides) (1) utilizing 2-chloro-, 2-nitrobenzoic acids and N-unsubstituted isatoicanhydrides as starting materials, are described.
三种制备N-取代的2 H -3,1-苯并恶嗪-2,4(1 H)二酮(乙酸酐)的方法(1)使用2-氯-,2-硝基苯甲酸和N-未取代的等角酸酐作为制备方法描述了起始材料。
(EN) 3-Acylamino-5-Aminobenzo[1,5] diazepines are useful in the treatment of arrhythmia. The compounds have structural formulae (I) and (II).(FR) L'invention se rapporte à des 3-acylamino-5-aminobenzo[1,5] diazépines qui sont utilisées dans le traitement de l'arythmie. Les composés ont les formules structurelles (I) et (II).