Potassium Carbonate → HCID 59127147, compound

Participants

Reaction Steps

A solution of 3-[((1S)-2-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-1-methylethyl)oxy]-5-hydroxy-N-(1-methyl-1H-pyrazol-3-yl)benzamide (1.0 g, 2.47 mmol), ethyl 5,6-dichloronicotinate (0.57 g, 2.59 mmol), and potassium carbonate (0.855 g, 6.14 mmol) in acetonitrile (15 mL) was heated at 160° C. for 4 hours using microwave heating. The acetonitrile was removed in vaccuo and the residual oil partitioned between water (50 mL) and ethyl acetate (75 mL). The ethyl acetate layer was separated, washed with brine, dried (MgSO4), and evaporated to a residue which was chromatographed on silica, eluting with 50% ethyl acetate in hexane to give the desired compound (1.1 g). The analytical data indicated that transesterification had occurred at some stage in the procedure to furnish the methyl ester.

Provenance & Evidence