Direct Amidation of 2′-Aminoacetophenones Using I<sub>2</sub>-TBHP: A Unimolecular Domino Approach toward Isatin and Iodoisatin
作者:Andivelu Ilangovan、Gandhesiri Satish
DOI:10.1021/jo500550d
日期:2014.6.6
Synthesis of isatin and iodoisatin from 2′-aminoacetophenone was achieved via oxidative amido cyclization of the sp3C–Hbond using I2–TBHP as the catalyticsystem. The reaction proceeds through sequential iodination, Kornblum oxidation, and amidation in onepot. This method is simple, atom economic, and works under metal- and base-free conditions.
Selenium-Promoted Intramolecular Oxidative Amidation of 2-(Arylamino)acetophenones for the Synthesis of<i>N</i>-Arylisatins
作者:Yong Liu、Hui Chen、Xiong Hu、Wang Zhou、Guo-Jun Deng
DOI:10.1002/ejoc.201300477
日期:2013.7
A convenient method for the synthesis of N-arylisatins from 2-(arylamino)acetophenones by using SeO2 as an oxidant is described. Various substituted N-arylisatins were selectively obtained in good to excellent yields. The reaction tolerates a wide range of functionalities.
Quinolone derivatives having a quinolone structure: ##STR1## where Yo is O or S are disclosed, which are useful as cardiotonic agents. Typical examples of the quinolone derivatives include: 6,7-dimethoxy-4 (1H) quinolone (compound 6) and 5-hydroxy-6-methoxy-4(1H) quinolone (compound 1) as typical compounds of the formulae[I] and [I'], respectively, shown in the specification.
Copper-Catalyzed Intramolecular Oxidative C(sp<sup>3</sup>)-H Amidation of 2-Aminoacetophenones: Efficient Synthesis of Indoline-2,3-diones
作者:Jinbo Huang、Tingting Mao、Qiang Zhu
DOI:10.1002/ejoc.201400012
日期:2014.5
An efficient synthesis of diverse indoline-2,3-diones from 2-aminoacetophenones through copper-catalyzedintramolecular C(sp3)–H amidation is developed. The reaction proceeds in DMSO by using O2 as the sole oxidant to provide the desired products in moderate to good yields.