Acetic Acid → 2-[3-(difluoromethyl)-5-methyl-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazol-4-yl]imidazo[4,5-d]dipyrido[2,3-b: 4',3'-f]azepin-3(8H)-ol

Participants

Reaction Conditions

Reaction Steps

A mixture of (6Z)-5H-dipyrido[2,3-b:4′,3′-f]azepine-5,6(11H)-dione 6-oxime (1.00 g, 4.16 mmol), ammonium acetate (6.00 g, 77.8 mmol) and 3-(difluoromethyl)-5-methyl-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazole-4-carbaldehyde (2.50 g, 8.19 mmol) in acetic acid (6.0 mL, 0.106 mol) was stirred at 80° C. for 2 h. The reaction was partitioned between dichloromethane/isopropanol (5:1) and water and the organic extract was washed with NaHCO3, brine, dried (MgSO4) and concentrated in vacuo. The residue was used in the next reaction without purification. Mass spec: (EI) m/z=466 (M+1).

Provenance & Evidence