Am. Kornilov et al., SELECTIVE INCORPORATION OF CF2-GROUP INTO THE NATURAL COMPOUNDS MOLECULES - SYNTHESIS OF 14,14-DIFLUOROCORIOLIC ACID, Tetrahedron : asymmetry, 6(1), 1995, pp. 199-206
The difluorides obtained in the reaction of DAST with appropriate keto
nes could serve as a suitable starting materials for the selective inc
orporation of CF2-group into the molecules of the unsaturated chiral n
atural compounds. As an example, stereoselective synthesis of (R)-14,1
4-difluoro-13-hydroxy-9(Z) ,11(E)-octadecadienoic acid [(R)-14, 14-dif
luorocoriolic acid] 6 is reported.