反应详情

温度

50 °C

A solution of 2-chloro-3-[2-(tetrahydro-2H-pyran-2-yloxy]ethoxy]pyridine (from Example 4; 100 mg, 0.39 mmol), 2-(N-methyl-N-isopropylamino)ethanol (68 μl, 0.58 mmol) and 1.0 M potassium tert-butoxide in tert-butanol (0.8 mL, 0.80 mmol) in 4 mL of toluene was heated at 100° C. for 1 day. The organic phase was washed with 3×2 mL of water and 2 mL of brine. The organic phase was shaken at 50° C. with 4 mL of 2.0 M acetic acid for 2 days. The aqueous phase was washed with 3×3 mL of ethyl acetate, made basic by addition of potassium hydroxide, saturated with sodium chloride and extracted with 3×2 mL of ethyl acetate. The organic phase was dried (MgSO4) and concentrated under reduced pressure to give 75 mg (0.30 mmol, 76%) of the title compound as a colorless oil. LC-UV purity 95%. MS m/z 255 (M+1)+, calc. 255 (M+1)+.

1. washThe organic phase was washed with 3×2 mL of water and 2 mL of brine
2. washThe aqueous phase was washed with 3×3 mL of ethyl acetate
3. additionmade basic by addition of potassium hydroxide, saturated with sodium chloride
4. extractionextracted with 3×2 mL of ethyl acetate
5. dry with materialThe organic phase was dried (MgSO4)
6. concentrationconcentrated under reduced pressure