2,2-Difluoroethyl trifluoromethanesulfonate → HCID 86729795, compound

Participants

Reaction Steps

As described in Example 4, Step A, (3-oxo-isoxazolidin-4-yl)-carbamic acid tert-butyl ester (0.30 g) was alkylated with 2,2-difluoroethyl trifluoromethanesulfonate (0.35 g). to afford the title product as a white solid (138 mg); 1H-NMR (CDCl3, 400 MHz): 6.05 (tt, 1H), 5.10 (m, 1H), 4.90 (m, 1H), 4.35 (dt, 2H), 4.20 (dd, 1H), 1.50 (s, 9H); along with the O-alkylated product (179 mg): 1H-NMR (CDCl3, 400 MHz): 5.95 (tt, 1H), 4.80 (m, 1H), 4.60 (m, 1H), 3.80-4.10 (m, 3H), 1.50 (s, 9H).

Provenance & Evidence