A variety of N-substituted 3-aminocyclohex-2-enones were converted into the corresponding N-arylated α-iodo enaminones in high yields via concurrent α-iodination and N-arylation mediated by ArI(OAc)2. A mechanism is postulated to account for the reaction differences between the cyclic and the acyclic β-enaminones, which undergo predominant α-acetoxylation under the same reaction conditions.
多种N取代的3-
氨基
环己烯-2-酮通过ArI(OAc)2介导的α-
碘化和N-芳基化同时转换为相应的N-芳基化α-
碘乙烯酮,得到高产率。假设了一种机制来解释环状和非环状β-
乙烯酮在相同反应条件下反应差异的原因,其中后者主要经历α-醋氧化反应。