Sodium Thiosulfate → HCID 86691578, compound

Participants

Reaction Steps

A solution of ethyl 2-hydroxy-2-(3-methyl-1-(trifluoromethylsulfonyloxy) naphthalen-2-yl)acetate (5.5 g, crude) in DCM (160 mL) was treated with Dess-Martin periodinane (7.18 g, 16.9 mmol) at 23° C. After 1 h, the reaction was added slowly over 5 min to 10% Na2S2O3 (100 mL). After 30 min, the reaction was extracted with DCM (3×50 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated. The residue was treated with benzene, filtered, and wet-loaded onto a silica gel column and purified by flash chromatography (ethyl acetate/hexanes) giving the desired product in semipure form (3.9 g). 1H NMR (400 MHz, CDCl3): δ 8.11-8.08 (m, 1H), 7.86-7.83 (m, 1H), 7.76 (s, 1H), 7.66-7.60 (m, 2H), 4.41 (q, J=7.4 Hz, 2H), 2.50 (s, 3H), 1.40 (t, J=7.4 Hz, 3H). 19F NMR (377 MHz, CDCl3) δ−73.3 (s).

Provenance & Evidence