Addition conjuguee des α, ω-bis(bromomagnesio)alcanes sur les coumarines
作者:P. Canonne.、H. Caron、G. Foscolos
DOI:10.1016/s0040-4020(01)91475-9
日期:1984.1
4-dihydrocoumarin. A large difference in product distribution was observed between the two bifunctional reagents. Annelation was favored by the use of 1,4-bis(bromomagnesio))butane, whereas conjugate addition was observed with 1,5-bis(bromomagnesio)pentane and even In the use of 4-methylcoumarin.