Synthesis of Structurally Diverse Benzotriazoles via Rapid Diazotization and Intramolecular Cyclization of 1,2‐Aryldiamines
作者:Réka J. Faggyas、Nikki L. Sloan、Ned Buijs、Andrew Sutherland
DOI:10.1002/ejoc.201900463
日期:2019.9
mild conditions, using a polymer‐supported nitrite reagent and p‐tosic acid. The functional group tolerance of this approach was further demonstrated with effective activation and cyclization of N‐alkyl, ‐aryl, and ‐acyl ortho‐aminoanilines leading to the synthesis of N1‐substituted benzotriazoles. The synthetic utility of this one‐pot heterocyclization process was exemplified with the preparation of a
已经开发了一种操作简单的方法,通过使用聚合物负载的亚硝酸盐试剂和对甲苯磺酸在温和条件下通过重氮化和分子内环化多种 1,2-芳基二胺来制备 N-未取代的苯并三唑。通过有效活化和环化 N-烷基、-芳基和-酰基邻-氨基苯胺,合成 N1 取代的苯并三唑,进一步证明了该方法的官能团耐受性。这种单锅杂环化过程的合成效用可以通过制备许多具有生物学和医学意义的苯并三唑支架来举例说明,包括一种 α-氨基酸类似物。