Methanol → HCID 58779094, compound

Participants

Reaction Steps

In methanol (50 ml) was dissolved 4-amino-2-fluoro-3-hydroxyphenylacetic acid (2.52 g, 12.7 mmol). At room temperature, 2-chlorophenyl isothiocyanate (1.99 ml, 12.7 mmol) was added to the resulting solution. After the resulting mixture was stirred at room temperature for 2.5 hours, mercuric oxide (yellow) (3.29 g, 15.2 mmol) was added thereto. The mixture was stirred further for 14 hours at 70° C. The reaction mixture was allowed to cool down to room temperature. The insoluble matter was filtered off through Celite under reduced pressure, followed by washing with methanol. From the filtrate, the solvent was distilled off under reduced pressure. The residue was purified by chromatography on a silica gel column (silica gel: 100 g, chloroform/ethyl acetate (30/1)), whereby from eluate fractions, methyl 2-(2-chlorophenyl)amino-7-fluoro-6-benzoxazolylacetate (2.12 g, 50%) was obtained as a pale pink solid.

Provenance & Evidence