Electrochemical Synthesis Based on the Oxidation of 1-(4-(4-Hydroxyphenyl)piperazin-1-yl)ethanone in the Presence of Nucleophiles
作者:Amene Amani、Davood Nematollahi
DOI:10.1021/jo302418p
日期:2012.12.21
Electrochemical syntheses of new arylthiobenzazoles were carried out by electrochemicaloxidation of 1-(4-(4-hydroxyphenyl)piperazin-1-yl)ethanone in the presence of 2-mercaptobenzothiazole and 2-mercaptobenzoxazole. Our voltammetric data indicate that electrochemically generated p-quinone imine participates in a Michael addition reaction with 2-SH-benzazoles leading to the disubstituted 1-(4-(4-h
在2-巯基苯并噻唑和2-巯基苯并恶唑的存在下,通过1-(4-(4-羟基苯基)哌嗪-1-基)乙酮的电化学氧化,可以进行新的芳基硫代苯并唑的电化学合成。我们的伏安数据表明,电化学生成的对苯醌亚胺参与了与2- SH-苯并恶唑的迈克尔加成反应,从而导致了双取代的1-(4-(4-羟苯基)哌嗪-1-基)乙酮。此外,提出了在对甲苯亚磺酸存在下氧化1-(4-(3,5-双(苯并[ d ]噻唑-2-基硫基)-4-羟基苯基)的一种可能的机理。 4-(3,5-双(苯并[ d通过噻吩型加成将] [噻唑-2-基硫基)-4-羟基苯基)转化为2-(苯并[d]噻唑-2-基硫基)-6-甲苯磺酰基环己基2,5-二烯-1,4-二酮。的p -toluenesulfinic酸到阳极产生p -quinone亚胺,代替2-巯基苯并接着水解。