pyrazolin-5-ones as a nucleophile in aqueous solution has been investigated in detail by applying laccase as a catalyst. This is the first report for the enzymatic synthesis of a novel series of compounds. We derived somenew compounds with the catechol/hydroquinone ring in moderate yields based on enzymatic synthesis in an environmentally benign aqueous solution. These types of reactions represent a milestone
Cost-effective electrosynthesis of a series of edaravones through an electrochemical-assisted domino heteroannulation and paired electrochemical process
作者:Mohammad M. Khodaei、Abdolhamid Alizadeh、Tayyebeh Kanjouri
DOI:10.1007/s13738-015-0702-0
日期:2015.12
results indicate that a one-pot multi-step sequential reaction occurs between edaravone and the electrochemically derived ortho- and para-benzoquinones affording fused poly-heterocyclic compounds. Using controlled potential coulometry, it has been proved that this catalyst-free, tandem reaction occurs via EC, ECECi, and ECECiCi mechanisms. The paired electrochemicalsynthesis of compound 5g has been
通过在水溶液中依达拉奉的存在下儿茶酚的阳极氧化,成功合成了一系列新颖的依达拉奉结构。循环伏安法结果表明,依达拉奉与电化学衍生的邻,对-对苯醌之间发生一锅多步顺序反应,从而提供稠合的多杂环化合物。使用可控电库仑法,已证明这种无催化剂的串联反应是通过EC,ECEC i和ECEC i C i机制发生的。化合物5g的配对电化学合成。在一个不分格电池中,碳棒作为工作电极,RVC作为对电极,通过一锅法成功完成了这一过程。另外,依达拉奉衍生物的电合成已经在环境条件下使用具有高原子经济性的环境友好方法在未分裂的电池中成功进行。通过光谱法,例如FT-IR,1 H NMR,13 C NMR和MS充分表征所有获得的化合物。