Radical anions of nitrobenzothiazoles. II. EPR study of free radical anions and ion pairs

被引：1
|
作者：
Ciminale, Francesco [1 ]
机构：
[1] Univ Bari, Dipartmento Chim, Via Orabona 4, I-70126 Bari, Italy
来源：
ARKIVOC | 2006年
关键词：
EPR spectroscopy; radical anions; ion pairs; nitrobenzothiazoles; one electron reduction;
D O I：
10.3998/ark.5550190.0007.610
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
The paramagnetic species produced by reduction of the title compounds (NBTZ) with different reducing agents have been characterized by EPR spectroscopy. Radical ion pairs were observed upon reduction with alkali metals (Li, Na, K) in THF only from 5-, 6-, and 7-nitrobenzothiazole. The free radical anion of 7-NBTZ was obtained by reduction with Na in HMPA. Different tetraethylammonium ion pairs of the radical anion of 7-NBTZ were detected in HMPA when the reduction was performed by electrolysis at variable concentration of tetraethylammonium perchlorate as supporting electrolyte.
引用
收藏
页码：97 / 103
页数：7
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