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Beilstein J. Org. Chem. 2020, 16, 1936–1946, doi:10.3762/bjoc.16.160
Graphical Abstract
Figure 1: Representative fluorinated nucleos(t)ides and acyclonucleotides.
Figure 2: Acyclonucleotides as nucleotide surrogates.
Figure 3: Olefination approaches and ring-opening of oxetane derivatives.
Scheme 1: Preparation of fluoroakylidene-oxetanes and their ring-opening reactions.
Scheme 2: Synthesis of benzyloxy-substituted fluoroethylidene-oxetane derivative 8.
Scheme 3: Effect of the medium on the selective formation of derivative 10.
Scheme 4: Mechanism for the formation of dihydrofuran 10.
Scheme 5: Mechanism for the formation of unsaturated lactones 14 and 15.
Scheme 6: Opening reaction of ethyl 2-(oxetanyl-3-idene)acetate (16).
Scheme 7: Functionalization of bromomethyllactone 15 and its analogues.
Scheme 8: Functionalization by substitution reaction of the bromide E-1d vs ring-opening reaction of the oxet...
Scheme 9: Preparation of tetrasubstituted fluoroalkenes.