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
作者:Thangellapally Shirisha、Subir Majhi、Sridhar Balasubramanian、Dhurke Kashinath
DOI:10.1039/d3ob01752d
日期:——
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%
在此,我们报告了一种无金属且有效的方法,通过添加偶氮二羧酸酯(C-N键)和马来酰亚胺,在C4位上对1,2,3,4-四氢吖啶进行C(sp 3 )-H官能化( C-C 键)在 80 °C 下使用低共熔溶剂 (DES)。 C4 官能化的 1,2,3,4-四氢吖啶具有高原子效率、精确的区域选择性和 70-96% 的产率。所开发方法的实用性已通过克级合成得到证明。还计算了所开发方法的绿色指标,发现这些指标接近理想值。