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
Effect of catalytic alkali metal bromide on Hofmann-type rearrangement of imides
作者:Katsuhiko Moriyama、Kazuma Ishida、Hideo Togo
DOI:10.1039/c2cc33914e
日期:——
The Hofmann-type rearrangement of aromatic and aliphatic imides using KBr as the catalyst proceeded to provide aromatic and aliphatic amino acid derivatives. We have also developed a new synthetic route to gabapentin with this method.
A novel electrochemical protocol for the oxidative cleavage of indoles has been developed, which offers a simple way to access synthetically useful anthranilic acid derivatives. In undivided cells, a wide variety of indoles and alcohol compounds are examined to afford amide ester aromatics without using extra oxidants and stoichiometric metal catalysts, which avoids the formation of undesired by-products
On reaction with (diacetoxyiodo)benzene, isatin and N-acetyl isatin undergo the oxidative C2-C3 bond cleavage to form carbamates of alkyl anthranilates and alkyl 2-acetamidobenzoate, respectively.
Tunable Electrosynthesis of Anthranilic Acid Derivatives via a C–C Bond Cleavage of Isatins
作者:Peng Qian、Jiaojiao Liu、Yan Zhang、Zhiyong Wang
DOI:10.1021/acs.joc.1c01017
日期:2021.11.19
A facile and direct electrocatalytic C–C bond cleavage/functionalization reaction of isatins was developed. With isatins as the amino-attached C1 sources, a variety of aminobenzoates, and aminobenzamides were synthesized in moderate to good yields under mild conditions.