作者:Helena M. C. Ferraz、Myrian K. Sano、Marta R. S. Nunes、Graziela G. Bianco
DOI:10.1021/jo011089+
日期:2002.6.1
the cyclofunctionalization of eleven differently substituted alkenyl-beta-dicarbonyl compounds, employing three electrophilic reagents, namely, iodine, p-methoxyphenyltellurium trichloride, and phenylselenenyl bromide. The reactions occur through the enolic form of the substrates, to afford the corresponding iodo-, telluro-, or selenocyclic enol ethers. Substrates bearing trisubstituted double bonds
在这项工作中,我们描述了使用三种亲电试剂,即碘,对甲氧基苯基三氯化碲和苯基硒烯基溴化物,对11种不同取代的烯基-β-二羰基化合物的环官能化。反应通过底物的烯醇形式发生,以提供相应的碘-,碲-或硒环烯醇醚。具有三取代双键的底物无法与硒和碲试剂反应。通常,在所研究的三种亲电试剂中,β-二酮的反应比β-酮酯的反应快。