Metal-Free Sustainable Synthesis of Amides via Oxidative Amidation Using Graphene Oxide as Carbocatalyst in Aqueous Medium
作者:Anshu Dandia、Sonam Parihar、Pratibha Saini、Kuldeep S. Rathore、Vijay Parewa
DOI:10.1007/s10562-019-02878-5
日期:2019.11
We describe an efficient, clean and metal-free procedure for the synthesis of amides via oxidative amidation of aldehydes with anilines using graphene oxide (GO) as a recyclable catalyst and KBrO3 as a mild oxidant in aqueous medium under microwave irradiation. GO nanosheets were prepared and characterized by XRD, TEM, SEM, and FT-IR, analyses. GO showed high compatibility with KBrO3 in water and offered
我们描述了一种高效、清洁且不含金属的方法,用于在微波辐射下在水性介质中使用氧化石墨烯 (GO) 作为可回收催化剂和 KBrO3 作为温和氧化剂,通过醛与苯胺的氧化酰胺化合成酰胺。制备了 GO 纳米片,并通过 XRD、TEM、SEM 和 FT-IR 分析对其进行了表征。GO 在水中表现出与 KBrO3 的高度相容性,并提供高 TOF 值(1.30 × 10-3 mol g-1 min-1)。GO 氧官能团在温和的条件下有效地催化氧化酰胺化,具有高可回收性。通过分离中间体提出了一种合理的机制。