Radical cyclization to dibenzo[de,g]chromanones. A new synthesis of phenanthrene compounds.
作者:Juan C. Estévez、M.Carmen Villaverde、Ramón J. Estévez、Luis Castedo
DOI:10.1016/s0040-4020(01)86354-7
日期:1993.3
We describe the radical cyclization of bromobenzylisochromanones to afford the novel dibenzo[de,g]chromanones. Opening the lactone ring of the latter allows the preparation of phenanthrene alkaloids and 1-phenanthrenylacetic acids.
Tributyltin(IV) hydride mediated free-radical syntheses of dehydrodibenzochromanones, dehydrodibenzocoumaranones and aristolactams
作者:Juan C. Estévez、M.Carmen Villaverde、Ramón J. Estévez、Luis Castedo
DOI:10.1016/0040-4020(95)00124-q
日期:1995.4
We describe free radical cyclization of methyl bromophenylacetylphenylacetates to novel dehydrodibenzo[de,g]chromanones; oxidation of the latter compounds allowed the first total synthesis of dehydrodibenzo[cd,f]coumaranones, which are easily transformed into aristolactams.
Castedo, Luis; Estevez, Ramon J.; Saa, Jose M., Journal of Heterocyclic Chemistry, 1982, vol. 19, p. 1469 - 1472
作者:Castedo, Luis、Estevez, Ramon J.、Saa, Jose M.、Suau, Rafael