Synthesis of Substituted Oxindoles from α-Chloroacetanilides via Palladium-Catalyzed C−H Functionalization
作者:Edward J. Hennessy、Stephen L. Buchwald
DOI:10.1021/ja037546g
日期:2003.10.1
A novel method for the synthesis of oxindoles is described. In the presence of catalytic palladium acetate and 2-(di-tert-butylphosphino)biphenyl, α-chloroacetanilides are converted to oxindoles in good to excellent yields with high functional group compatibility using triethylamine as a stoichiometric base. The cyclization is highly regioselective, obviating the need for prefunctionalized arenes.
描述了一种合成羟吲哚的新方法。在催化乙酸钯和 2-(二叔丁基膦)联苯的存在下,使用三乙胺作为化学计量碱,α-氯乙酰苯胺以良好至极好的收率转化为羟吲哚,并具有高官能团相容性。环化具有高度区域选择性,无需预官能化芳烃。讨论了可能的反应机理途径。