Mechanistic studies of copper(II)-mediated oxidation of vic-dioxime to furoxan

Journal of Chemical Sciences

Tapan Kanti Paine1¹  Oindrila Das¹ 

[1] Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A&2B Raja S C Mullick Road, Jadavpur, Kolkata 700 032, India$$

关键词: Copper;    vic-dioxime;    oxidation;    furoxan;    1;    10-phenanthroline;    dinitrosoalkene.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

The oxidation of vic-dioximes to furoxans by copper(II) perchlorate in acetonitrile as the oxidant has been discussed. This method was found to be applicable for a broad range of vic-dioximes. Copper complexes of 1,10-phenanthroline derived furoxans were isolated by oxidation of the corresponding copper(II) complexes of 1,10-phenanthroline based dioximes. In exploring the mechanism of copper(II)-mediated oxidative cyclization of vic-dioxime, a transient blue species was observed in the reaction pathway. Based on the spectroscopic signatures and reactivity patterns, the intermediate was proposed to be a dioximatecopper(II)-dinitrosoalkene complex. These results along with the role of metal ion and solvent in the oxidative transformation reaction are discussed in this review.

【 授权许可】

Unknown