Reaction of [α-(trimethylsilyl)benzyl]ferrocenes with α-ferrocenylbenzyl cations |
| |
Authors: | Tadao Kondo Keiji Yamamoto Makoto Kumada |
| |
Institution: | Department of Synthetic Chemistry, Kyoto University, Kyoto 606 Japan |
| |
Abstract: | Although methanolysis of α-(trimethylsilyl)benzyl]ferrocene (I) and p-methyl-α-(trimethylsilyl)benzyl]ferrocene (II) in the presence of anhydrous ferric chloride merely gave α-ferrocenylbenzyl methyl ether (III) and p-methyl-α-ferrocenylbenzyl methyl ether (IV), respectively, acid-catalyzed methanolysis of (I) and (II) in the presence of an equimolar amount of (III) or (IV) afforded 1,2-diferrocenyl-l,2-diarylethanes. It is suggested that one electron oxidation of α-(trimethylsilyl)benzyl]ferrocene by α-ferrocenylbenzyl cation generated from α-ferrocenylbenzyl methyl ether, and subsequent methanolysis of the resulting substituted ferricenium ion may occur to give the two species of α-ferrocenylbenzyl radical, which in turn undergo an approximately statistical coupling. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|