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The tertiary sulfonamide as a latent directed-metalation group:: Ni0-catalyzed reductive cleavage and cross-coupling reactions of aryl sulfonamides with Grignard reagents
被引:47
|作者:
Milburn, RR
[1
]
Snieckus, V
[1
]
机构:
[1] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada
关键词:
arenes;
cross-coupling;
magnesium;
nickel;
sulfonamides;
D O I:
10.1002/anie.200352633
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A mild method for the Ni0-catalyzed hydrodesulfamoylation (see scheme, B) of aryl sulfonamides (1→2) with iPr2Mg or iPrMgCl as β-hydride transfer sources can be linked with directed ortho metalation (A and C) to give meta-substituted aromatics 2. Cross-coupling process with alkyl and aryl Grignard reagents furnish disubstituted benzenes and bi- and teraryl compounds.
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页码:888 / 891
页数:4
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