Ecofriendly Iodination of Activated Aromatics and Coumarins Using Potassium Iodide and Ammonium Peroxodisulfate
作者:Nemai Ganguly、Sujoy Barik、Sanjoy Dutta
DOI:10.1055/s-0029-1218698
日期:2010.5
An environmentally benign protocol for the iodination of activated aromatics, such as phenols, anilines, and hydroxycoumarins, using inexpensive commercially available potassiumiodide and ammonium peroxodisulfate (1:2.5 molar equivalents per mole of substrate) in aqueous methanol (MeOH-H2O, 6:1) at room temperature has been developed. The protocol provides for ortho-selective monoiodination as the
Iodination of Aromatic Compounds Using Potassium Iodide and Hydrogen Peroxide
作者:K. Suresh Kumar Reddy、N. Narender、C. N. Rohitha、S. J. Kulkarni
DOI:10.1080/00397910802238767
日期:2008.10.28
Abstract A simple, efficient, regioselective, and ecofriendly method for oxyiodination of aromaticcompounds is presented. In this method, the electrophilic substitutions of iodine generated in situ from KI as an iodine source and hydrogen peroxide as an oxygen source have been employed without any catalyst/mineral acid for the first time.
摘要 提出了一种简单、高效、区域选择性和环境友好的芳香族化合物氧碘化方法。在该方法中,首次在没有任何催化剂/无机酸的情况下使用了由 KI 作为碘源和过氧化氢作为氧源原位产生的碘的亲电取代。
Gas-chromatographic identification of products formed in iodination of methyl phenols by retention indices
作者:I. V. Gruzdev、I. M. Kuzivanov、I. G. Zenkevich、B. M. Kondratenok
DOI:10.1134/s1070427212090108
日期:2012.9
Iodination reaction followed by conversion of iodine-substituted methylphenols to the corresponding trifluoroacetates was suggested for improving the sensitivity of the gas-chromatographic determination of phenol and its methyl-substituted derivatives (al isomers of mono-and diethylphenols, 2,3,5-, 2,3,6-, and 3,4,5-trimethylphenols) in aqueous media. Acylation products of iodo methylphenols (104 compounds) were identified by linear-logarithmic retention indices on a standard nonpolar polydimethylsiloxane stationary phase, and the pattern of their variation with the number and nature of substituents were characterized. A procedure for identification of methyl-substituted phenols in water in their gas-chromatographic determination with an electron-capture detector was developed.