โ Scribed by Luisa M. Ferreira; Ana M. Lobo; Sundaresan Prabhakar; Antonieta C. Teixeira
No coin nor oath required. For personal study only.
Reactions of 2-Acylthiazolium Salts with N-Arylhydroxylamines. -O-Acyl-N-arylhydroxylamine derivatives (IV) are obtained from the acylation of N-arylhydroxylamines (I) with acylthiazolium triflates (II). In addition, varying amounts of arylamines, azoxy and azo compounds derived from hydroxylamines (I) are invariably formed in these reactions. The p-tolyl derivative (If) fails to give the acylated product with the 2-acetylthiazolium salt. Instead, compound (V) is formed probably from two thiazolium molecules.
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๐ SIMILAR VOLUMES
## Synthesis of N-Acyliminium Salts by Reaction of Nitrilium Salts with Ketones. -A new method is reported for the synthesis of N-acyliminium salts such as (III) or (V) by reaction of nitrilium salts (I) with ketones bearing electron-releasing substituents.
## Reduction of Nitroarenes to N-Arylhydroxylamines with KBH4/BiCl3 System. -The KBH4/BiCl3 system is able to reduce selectively aromatic nitro groups in the presence of other reducible functional groups. -(REN, P.-D.;