1,4-Diaminobutanes from furans: A new synthetic approach to substituted putrescines
作者:Benjamin Frydman、Maria I. Ojea
DOI:10.1016/s0040-4039(98)00903-4
日期:1998.7
A novel approach for the synthesis of (hydroxymethyl)- and (aminomethyl)-putrescines starting with furanmethanols and aminomethyl-furanmethanols is reported. The furans were converted to their 2,5-dimethoxy-tetrahydrofuran derivatives and the latter were ring-opened in acid media. The resulting carbonyl derivatives were isolated as their dioximes and the latter were then reduced to the corresponding
A divergent protocol for solid-phase synthesis of highly substituted Bi-aryl furan derivatives
作者:Yongxin Han、Amélie Roy、André Giroux
DOI:10.1016/s0040-4039(00)00907-2
日期:2000.7
A versatile protocol for the solid-phasesynthesis of highly substituted furan derivatives is discussed. This approach employs zincate 1 as the scaffold followed by sequential palladium-catalyzed cross-coupling reactions as the C–C bond-formation step. This methodology allows convenient modification of the furan core in three dimensions, giving rise to structurally diverse derivatives with overall