lignin-derived substrates have emerged as desirable biorenewable chemical feedstocks for coupling reactions. A radical-mediated conversion of phenol derivatives to anilines is reported, using unfunctionalized hydroxamic acids as the N-centered radical source. The applicability of this triethyl phosphite mediated O-atom transfer approach, which tolerates a range of steric and electronic demands to naturally
酚类,
木质素衍生的底物已成为偶联反应的理想
生物可再生
化学原料。据报道,使用未官能化的异羟
肟酸作为N中心自由基源,可将
苯酚衍
生物自由基介导地转化为
苯胺。在这项工作中证明了该
亚磷酸三乙酯介导的O原子转移方法的适用性,该方法可耐受对天然存在的
酚和
木质素模型的一系列空间和电子需求,从而可获取相应的
苯胺衍
生物。