An unusual radical smiles rearrangement
An unusual radical smiles rearrangement
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DOI:
10.1021/ol051568l
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发表时间:
2005-08-18
期刊:
影响因子:
5.2
通讯作者:
Zard, SZ
中科院分区:
文献类型:
--
作者:
Bacqué, E;El Qacemi, M;Zard, SZ
Radicals derived from N-(alpha-xanthyl)acetanilides or N-(alpha-xanthyl)acetylaminopyridines possessing a substituent next to the nitrogen undergo a hitherto undocumented Smiles rearrangement proceeding through a four-membered ring. It was also found that under certain conditions the amidyl radical produced by cleavage of the four-membered ring intermediate can undergo fragmentation to give an isocyanate. Such fragmentations are unprecedented at temperatures corresponding to refluxing benzene or chlorobenzene.