Department of Chemistry, Northeast Normal University, Changchun 130024, China.
Org Lett. 2011 Apr 1;13(7):1674-7. doi: 10.1021/ol200169g. Epub 2011 Mar 4.
With a FeSO(4)/TBHP system in water, direct oxidation of sp(3) C-H bonds adjacent to nitrogen of arylureas to give both unprecedented tert-butoxylated and hydroxylated products 2 was revealed. Under elevated temperatures, either 2-oxo-N-arylpyrrolidine-1-carboxamides 3 or 1,3-diarylureas 4 were attained, depending on the aliphatic ring size of the arylurea substrates.
在水相的 FeSO(4)/TBHP 体系中,揭示了芳基脲 sp(3) C-H 键与氮相邻键的直接氧化,得到了前所未有的叔丁氧基化和羟基化产物 2。在较高温度下,根据芳基脲底物的脂环大小,可以得到 2-氧代-N-芳基吡咯烷-1-甲酰胺 3 或 1,3-二芳基脲 4。