Ligand assited asymmetric synthesis. II. Diastereoselective Diels-Alder additions with Lewis acid attracting auxillaries derived from pentitols
作者:Jean-Louis Gras、Annie Poncet、Robert Nouguier
DOI:10.1016/s0040-4039(00)92078-1
日期:1992.6
The dimethylene acetals of the three pentitols and methylene acetal of 1,2,4-butanetriol behave as effective templates for the diastereoselective Diels-Alder reaction. The chirality transfer occurs through a chelate-complex involving one of the dioxane rings.