I. Paterson et al., STUDIES IN MARINE MACROLIDE SYNTHESIS - BORON AND SILICON-MEDIATED COUPLING STRATEGIES FOR SWINHOLIDE-A, Tetrahedron letters, 35(3), 1994, pp. 441-444
Reaction of aldehyde 6 with enol borinates 7 gives adduct 10 preferent
ially, whereas the allylsilane 18 provides the epimeric adduct 11 with
95% ds. Aldehyde 2 reacts mainly by si-face attack with simple Z enol
borinates, which can be overturned by reagent control from (+)-25.