Copper(I)-Catalyzed Nitrosylation/Annulation Cascade of Enaminones with <i>tert</i>-Butyl Nitrite: Access to 1<i>H</i>-1,2,3-Triazole 2-Oxides
作者:Ping Wu、Liandi Wang、Kaikai Wu、Zhengkun Yu
DOI:10.1021/acs.orglett.3c03302
日期:2023.12.1
The direct synthesis of triazole 2-oxides has posed a challenge in the field of N-heterocyclic chemistry. A novel copper(I)-catalyzed nitrosylation/annulation cascade of enaminones provides a straightforward route to 1H-1,2,3-triazole 2-oxides by forming new C–N, N=N, and N–N bonds using noncorrosive tert-butyl nitrite (TBN) as both the N and NO sources. The synthetic protocol features easily accessible
三唑2-氧化物的直接合成对N-杂环化学领域提出了挑战。一种新型铜(I)催化的烯胺酮亚硝基化/成环级联通过使用非腐蚀性物质形成新的C-N、N=N和N-N键,为生成1 H -1,2,3-三唑2-氧化物提供了直接途径亚硝酸叔丁酯 (TBN) 作为 N 源和 NO 源。该合成方案具有起始材料易于获取、底物范围广、对各种官能团具有良好的耐受性,同时避免使用爆炸性叠氮化物的特点。