Copper-Catalyzed CNH<sub>2</sub>Arylation of 2-Aminobenzimidazoles and Related C-Amino-NH-azoles
作者:Desaboini Nageswar Rao、Sk. Rasheed、Karampoori Anil Kumar、Annem Siva Reddy、Parthasarathi Das
DOI:10.1002/adsc.201600035
日期:2016.6.30
nucleophilic sites that are selectively arylated at the CNH2 position are obtained, providing an exceptional tool for rapid delivery of a diverse array of medicinally important CNH(aryl) derivatives of aminoazoles without any protection/deprotection of ring NH bonds. It is first example for the selective CNH2 arylation of 5‐aminoindazole, 4‐aminopyrazole, 5‐aminopyrazole, 9H‐purine‐6‐amine, and 1H‐pyrazolo[3
的铜(II) -催化选择性Ç NH 2的2-氨基苯并咪唑和露天的条件下在60℃下在2,2'-联吡啶和碳酸铯的存在下实现的相关C-氨基-NH-唑类芳基化,这为第一种方法的铜催化的选择性ç NH 2的芳基化在其它反应性亲核位点的存在。以前未开发杂具有多个亲核部位被在C选择性芳基化 NH 2位置获得,为药用重要℃的不同阵列的快速递送一个特殊工具无任何保护/脱保护aminoazoles的NH(芳基)衍生物N环H键。它是用于选择性C首先例如 NH 2 5氨基吲唑,4-氨基吡唑,5-氨基吡唑,9的芳基化ħ嘌呤-6-胺和1- ħ -吡唑并[3,4- d ]嘧啶-4-胺衍生物。