An I<sub>2</sub>-mediated aerobic oxidative annulation of amidines with tertiary amines<i>via</i>C–H amination/C–N cleavage for the synthesis of 2,4-disubstituted 1,3,5-triazines
作者:Yizhe Yan、Zheng Li、Chang Cui、Hongyi Li、Miaomiao Shi、Yanqi Liu
DOI:10.1039/c8ob00635k
日期:——
An iodine-mediated formal oxidative cycloaddition of amidines with tertiary amines was first demonstrated in air. Both symmetrical and unsymmetrical 2,4-disubstituted 1,3,5-triazines were obtained in up to 85% yields. It is noted that a tertiary amine was employed as a one carbon synthon of 1,3,5-triazines and two C–N bonds were formed in one pot. Control experiments revealed that the reaction underwent
碘在空气中首次证明了碘与叔胺介导的甲醛氧化环加成反应。对称和不对称的2,4-二取代的1,3,5-三嗪均以高达85%的产率获得。注意,叔胺被用作1,3,5-三嗪的一个碳合成子,并且在一个罐中形成了两个C–N键。对照实验表明,该反应经历了由I +促进的自由基途径。该方法是无过渡金属,无过氧化物的,并且操作简便,可在多种基材上实施。