Photolysis of dialkoxy disulfides: A convenient source of alkoxy radicals for addition to the sphere of fullerene C-60

被引:47
作者
Borghi, R
Lunazzi, L
Placucci, G
Cerioni, G
Plumitallo, A
机构
[1] UNIV BOLOGNA,DIPARTIMENTO CHIM ORGAN A MANGINI,I-40136 BOLOGNA,ITALY
[2] UNIV CAGLIARI,DIPARTIMENTO SCI CHIM,CAGLIARI,ITALY
[3] UNIV CAGLIARI,DIPARTIMENTO FARMACO CHIM TECNOL,CAGLIARI,ITALY
关键词
D O I
10.1021/jo952169e
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Photolysis of dialkoxy disulfides ROSSOR (R = Me, Et, i-Pr, t-Bu, i-PrCH2, t-BuCH(2)) yields the radicals RO(.), ROS(.), and ROS(.)=O that were identified on the basis of product analysis and spin trapping techniques. It has been shown that only the alkoxy radicals RO(.), produced from ROSSOR, add to the sphere of fullerene C-60 in steady state conditions to yield the RO-C-60(.) adducts which can be detected by ESR spectroscopy. The different trend of the hydrogen splitting constants in the RO-C-60(.) with respect to the corresponding RS-C-60(.) adducts previously reported has been interpreted as a consequence of the different C-O and C-S bond lengths.
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页码:3327 / 3331
页数:5
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