Electrochemical Synthesis of 4-(Dihydroxyphenylthio)-2H-chromen-2-one Derivatives
作者:Davood Nematollahi、Javad Azizian、Mohsen Sargordan-Arani、Mahdi Hesari、Saeed Jameh-Bozorghi、Abdolhamid Alizadeh、Lida Fotouhi、Behrooz Mirza
DOI:10.1248/cpb.56.1562
日期:——
The 4-(dihydroxyphenylthio)-2H-chromen-2-one derivatives have been synthesized by direct electrochemical oxidation of catechols in the presence of 4-mercaptocoumarin as a nucleophile in water/acetonitrile (50/50) solution, in a one-pot process, at carbon rod electrode, in an undivided cell and in constant current conditions, through an EC mechanism. The products are characterized by spectra data. Besides, the difference in electrochemical oxidation of catechol in the presence of 4-hydroxycoumarin and 4-mercaptocoumarin explained by computational structure, natural bond orbital (NBO) analysis and density functional theory (DFT: B3LYP/6-31G*//B3LYP/6-31G*) based methods, using the GAUSSIAN 98 package of programs.
在水/乙腈(50/50)溶液中,以 4-巯基香豆素为亲核体,在碳棒电极、不分流电池和恒流条件下,通过 EC 机制,以一锅法直接电化学氧化儿茶酚,合成了 4-(二羟基苯硫基)-2H-苯并吡喃-2-酮衍生物。通过光谱数据对产物进行了表征。此外,在 4-hydroxycoumarin 和 4-mercaptocoumarin 的存在下,儿茶酚电化学氧化过程中的差异通过计算结构、自然键轨道(NBO)分析和基于密度泛函理论(DFT:B3LYP/6-31G*//B3LYP/6-31G*)的方法(使用 GAUSSIAN 98 程序包)进行了解释。