Dimethyl Sulfoxide → HCID 89442841, compound

Participants

Reaction Steps

Oxalyl chloride (0.068 mL, 0.80 mmol) was added to a solution of DMSO (0.113 mL, 1.60 mmol) in dry DCM (1 mL) at −78° C. under nitrogen atmosphere. The reaction mixture was stirred for 5 min. at the same temperature and then a solution of (2S,3S,4R,5S,6S)-2-(4-chloro-3-(4-(2-hydroxyethoxy)benzyl)phenyl)-6-methoxytetrahydro-2H-pyran-3,4,5-triyl triacetate (220 mg, 0.403 mmol), in dry DCM (3 mL) was added. The reaction mixture was stirred at the same temperature for 1 h. NEt3 (0.334 mL, 2.40 mmol) was added and the reaction mixture was allowed to come to r.t. The crude compound was extracted with DCM (30 mL). The organic layer was separated, washed with water (15 mL). The combined organic layers were dried over Na2SO4 and concentrated in vacuo to afford the title compound, which was used as such in next step.

Provenance & Evidence