反应详情

A solution of 6-[4-(3,6-dihydro-4-phenyl-1(2H)-pyridinyl)-1-butynyl]-3-pyridinamine (Example 20) (1.5 g, 0.005 mol), triethylamine (0.76 mL, 0.0054 mol) and N,N-dimethylaminopyridine (catalytic amount) in 50 mL of dichloromethane is cooled to 0° C. and acetyl chloride (0.42 mL, 0.006 mol) is added dropwise. The cold bath is removed and the solution is stirred at room temperature for 1 hour. The reaction is quenched with saturated aqueous sodium bicarbonate, the organic layer is washed with water and dried (sodium sulfate), and the solvent is removed under reduced pressure. The residue is chromatographed (silica gel, 2% methanol/98% dichloromethane) to give the title compound, containing 0.35 mol of water; mp 158.5°-159.5° C.

1. customThe cold bath is removed
2. customThe reaction is quenched with saturated aqueous sodium bicarbonate
3. washthe organic layer is washed with water
4. dry with materialdried (sodium sulfate)
5. customthe solvent is removed under reduced pressure
6. customThe residue is chromatographed (silica gel, 2% methanol/98% dichloromethane)