U. Koert et al., AN ENANTIOMERICALLY PURE EPOXYORGANOLITHIUM REAGENT FOR THE SYNTHESISOF OLIGO(TETRAHYDROFURANS) BY AN EPOXIDE-CASCADE REACTION, Tetrahedron letters, 35(41), 1994, pp. 7629-7632
Enantiomerically pure oligo(tetrahydrofurans) 17 and 18 have been prep
ared using an epoxide cascade reaction. The polyepoxide precursors 13
and 14 were synthesized using the enantiomerically pure epoxyorganolit
hium reagent 3. Thus, addition of 3 to the THF aldehyde 11 gave alcoho
l 12 with a high Cram selectivity of 95:5.