Carbene-Catalyzed Aroylation of a 2-Chloroquinoxaline<i>N</i>-Oxide with Aromatic Aldehydes at Room Temperature
作者:Jan Maichrowski、Aman Bhasin、Florenz Sasse、Dieter E. Kaufmann
DOI:10.1002/ejoc.201402252
日期:2014.7
12 new biologically promising aroylquinoxaline N-oxides were synthesized through carbene-catalyzed aroylation of the chloro nitrone unit with different aromatic aldehydes in the presence of 1,3-dimethylimidazolium iodide as the carbene precursor. The optimized reaction conditions tolerated a broad bandwidth of aldehydes and allowed the synthesis of the corresponding ketones in yields up to 87 %. Studies
从容易获得的 2-氯-3-(环戊氧基)-7-氟喹喔啉 1-氧化物开始,通过卡宾催化氯硝酮单元与不同芳香醛在 1-氧化物存在下的芳酰化,合成了 12 种具有生物学前景的新型芳酰基喹喔啉 N-氧化物。 ,3-二甲基咪唑碘化物作为卡宾前体。优化的反应条件可耐受宽带宽的醛,并允许以高达 87% 的产率合成相应的酮。对其生物活性的研究导致了对肿瘤细胞系的有趣的特异性细胞毒性作用。