1.
Org Lett
; 2(15): 2303-6, 2000 Jul 27.
Artigo
em Inglês
| MEDLINE
| ID: mdl-10930269
RESUMO
We have prepared highly efficient radical probes 2a-b involving the hex-5-enyl rearrangement. The reaction of 2a-b with active magnesium leads to the cyclized products 4a-b, providing a direct evidence of radical intermediates during the formation of aryl Grignard reagents. The variations of yields for cyclized products 4a-b as a function of structural modifications in 2a-b suggest that the intervention of dianions is not necessary to explain the observed results.