Reaction of aliphatic and aromatic amides in acetic acid with aqueous sodium bromite (NaBrO2) under mild conditions gave N-bromoamides in fairly good yields.
Organic Synthesis Using Sodium Bromate. II. A Facile Synthesis of<i>N</i>-Bromo Imides and Amides Using Sodium Bromate and Hydrobromic Acid (or Sodium Bromide) in the Presence of Sulfuric Acid
The reaction of imides and amides in water (or aqueous acetic acid) with sodium bromate and hydrobromic acid (or sodium bromide) in the presence of sulfuric acid under mild conditions gave the corresponding N-bromides in high yields.
unique 1,5-bromoamidated species has been identified, and can be viewed as a σH-adduct intermediate in a nucleophilic aromaticsubstitution. The 1,5-addition of both electrophilic and nucleophilic moieties into the metallaaromatic framework demonstrates a novel pathway in contrast to the typical radical process of arene C–H amidation involving N-haloamide reagents.