One-pot synthesis of <i>N</i>-substituted benzannulated triazoles <i>via</i> stable arene diazonium salts
作者:Rochelle McGrory、Réka J. Faggyas、Andrew Sutherland
DOI:10.1039/d1ob00968k
日期:——
A mild and effective one-pot synthesis of 1,2,3-benzotriazin-4(3H)-ones and benzothiatriazine-1,1(2H)-dioxide analogues has been developed. The method involves the diazotisation and subsequent cyclisation of 2-aminobenzamides and 2-aminobenzenesulfonamides via stable diazonium salts, prepared using a polymer-supported nitrite reagent and p-tosic acid. The transformation was compatible with a wide range
开发了一种温和有效的一锅法合成 1,2,3-benzotriazin-4(3 H )-ones 和 benzothiatriazine-1,1( 2H )-dioxide 类似物。该方法涉及通过使用聚合物负载的亚硝酸盐试剂和对甲苯磺酸制备的稳定的重氮盐对 2-氨基苯甲酰胺和 2-氨基苯磺酰胺进行重氮化和随后的环化。该转化与多种芳基官能团和酰胺/磺酰胺取代基相容,可用于合成药学上重要的靶标。通过制备含有 1,2,3-benzotriazin-4(3 H )-one的 α-氨基酸,进一步证明了一锅重氮环化过程的合成效用。