Intramolecular Diels-Alder reactions of tethered homo- and heterotrienes. Synthesis of substituted cyclohexenes and six-membered heterocycles
作者:Donald Craig、Richard S. Gordon
DOI:10.1016/s0040-4039(98)01829-2
日期:1998.11
Intramolecular Diels-Alder reactions of a number of diester-tethered trienes are reported. All-carbon trienes 5, 7 and 13 show little or no selectivity for trans-fused products. Heterotrienes 21 and 25 exhibit good to excellent cis-selectivity, with low to good selectivity for one of the two cis-fused isomers.
报道了许多二酯系三烯的分子内Diels-Alder反应。全碳三烯5、7和13对反熔产物的选择性很小或没有。异戊二烯21和25表现出良好至优异的顺式选择性,对两种顺式稠合异构体之一的选择性低至良好。