Water → HCID 68440870, compound

Participants

Reaction Steps

To a solution of 120 mg of 1-[(2R,4R,5R)-4-(4-methoxy-phenyl)-5-[4-(3-methoxy-propyl)-3,4-dihydro-2H-benzo[1,4]oxazin-6-ylmethoxy]-1-(toluene-4-sulfonyl)-piperidin-2-yl]-2-methyl-propan-2-ol (from example 57b) in 0.5 ml of tetrahydrofuran are added 80 mg potassium hydride (35% dispersion in oil). The reaction mixture is stirred for 1 hour and then 163 μl dimethylcarbamoyl chloride are added. The mixture is stirred at room temperature for 18 hours. The mixture is treated with 2 ml water and extracted with 50 ml ethyl acetate (2×). The combined organic layers are washed with brine and dried with sodium sulfate. The organic layer is filtered and evaporated under reduced pressure. The residue is purified by flash chromatography (SiO2 60 F) to afford the title compound as a yellow solid. Rf=0.45 (EtOAc-heptane 2:1); Rt=5.59.

Provenance & Evidence