Hofmann-Type Rearrangement of Imides by in Situ Generation of Imide-Hypervalent Iodines(III) from Iodoarenes
作者:Katsuhiko Moriyama、Kazuma Ishida、Hideo Togo
DOI:10.1021/ol300028j
日期:2012.2.3
The Hofmann-type rearrangement of aromatic and aliphatic imides using a hypervalent iodine(III) reagent generated in situ from PhI, m-CPBA, and TsOH·H2O proceeded in the presence of a base in alcohol to provide anthranilic acid derivatives and amino acid derivatives in high yields, respectively. This reaction proceeds through a tandem reaction via alcoholysis followed by a Hofmann rearrangement promoted
使用由PhI,m -CPBA和TsOH·H 2 O原位生成的高价碘(III)试剂对芳族和脂族酰亚胺进行霍夫曼型重排,可在醇中存在碱的情况下进行,以提供邻氨基苯甲酸衍生物和氨基酸衍生物分别高收率。这通过经由醇解之后是霍夫曼一个串联反应反应进行重排由酰亚胺-λ的形成促进了3 -iodane中间。