Tetrahydrofuran → HCID 58158587, compound

Participants

Reaction Steps

In the same manner as in Reference Example 65 and using ethyl 2-(2,4-difluorophenyl)-1-methyl-3-oxo-2,3-dihydro-1H-pyrazole-4-carboxylate (2.4 g, 8.7 mmol), tetrahydrofuran (6 mL), methanol (5 mL) and 4N aqueous sodium hydroxide solution (8 mL) as starting materials, the title compound (1.8 g, 83%) was obtained as a white solid.

Provenance & Evidence