HCID 73292041, compound → HCID 73292040, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-(4-chlorophenyl)-1-(2-nitrophenyl)-3-(2,2,6,6-tetramethyltetrahydro-2H-pyran-4-yl)-1H-pyrazole (Example 61) (1.10 g, 2.50 mmol) in 20 mL of ethanol and 20 mL of acetic acid was added iron powder (1.12 g, 20.0 mmol) and the mixture heated to 90° C. for 1 hr. The mixture was filtered through Celite and concentrated and the residue purified by silica gel chromatography (40-g cartridge, 10-25% EtOAc/heptane) to give 1.0 g (98%) the title compound as a white solid.

Provenance & Evidence