Metal-free C(sp<sup>3</sup>)–H functionalization (C–C and C–N bond formation) of 1,2,3,4-tetrahydroacridines using deep eutectic solvents as catalyst and reaction medium
Herein, we report a metal-free and efficient method for the C(sp3)–H functionalization of 1,2,3,4-tetrahydroacridines at the C4-position by the addition of azodicarboxylates (C–N bond) and maleimides (C–C bond) using deep eutectic solvents (DESs) at 80 °C. The C4-functionalized 1,2,3,4-tetrahydroacridines were achieved with high atom efficiency, precise regioselectivity, and yields ranging from 70–96%
Cu-catalyzed direct C–H amination of 2-alkylazaarenes with azodicarboxylates via nucleophilic addition
作者:Bo Qian、Lei Yang、Hanmin Huang
DOI:10.1016/j.tetlet.2012.12.055
日期:2013.2
An efficient Cu-catalyzed C-H amination of 2-alkylazaarenes with azodicarboxylates has been developed through nucleophilic addition of sp(3)C-H bond to unsaturated nitrogen-nitrogen double bond. It provides an easy access to azaarene-containing hydrazines from simple and easily available starting materials. (c) 2012 Elsevier Ltd. All rights reserved.