Triethylamine → N,N-Dimethyl-4-[5-fluoro-3-[4-(2-methylimidazol-1-yl)benzyloxy]phenyl]-3,4,5,6-tetrahydro-2H-pyran-4-carboxamide

To a stirred suspension of 4-[5-fluoro-3-[4-(2-methylimidazol-1-yl)benzyloxy]phenyl]-3,4,5,6-tetrahydro-2H-pyran-4-carboxylic acid (100 mg, 0.24 mmol), dimethylamine hydrochloride (98 mg, 1.2 mmol) and triethylamine (253 mg, 2.5 mmol) in THF (50 ml) at 0° C. was added diethyl cyanophosphonate (44 mg, 0.27 mmol). After 10 min, the reaction was diluted with water (50 ml) and extracted with ethyl acetate (50 ml). The extract was washed with water (50 ml) and brine (50 ml), dried over magnesium sulfate and concentrated. Purification of the residue was performed by column chromatography (silica-gel, 50 g; gradient polarity of eluant from dichloromethane to 5% methanol in dichloromethane) to give 117 mg of crude product as a colorless foam. Recrystallization from a mixture of isopropyl ether-ethyl acetate (1:1) to give the titled compound (51 mg, 50%).

1. extractionextracted with ethyl acetate (50 ml)
2. washThe extract was washed with water (50 ml) and brine (50 ml)
3. dry with materialdried over magnesium sulfate
4. concentrationconcentrated
5. customPurification of the residue
6. customto give 117 mg of crude product as a colorless foam
7. customRecrystallization
8. additionfrom a mixture of isopropyl ether-ethyl acetate (1:1)

ORD record

ord-f9ad84d8f6b3448bb0786881c60c5a41

Source dataset

uspto-grants-1999_03

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05883106