p-Toluenesulfonic acid monohydrate → HCID 178493403, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 3-(tetrahydro-pyran-2-yloxymethyl)-1H-indazole-5-carbaldehyde (0.32 g, 1.23 mmol) and 2-amino-4,6-dimethoxy-benzamide (0.24 g, 1.23 mmol) in N,N-dimethylacetamide (10 mL) were added NaHSO3 (58.5 wt %, 0.27 g, 1.48 mmol) and p-toluenesulfonic acid monohydrate (0.05 g, 0.25 mmol); the reaction mixture was heated at 120° C. for 16 hours, then cooled to room temperature. Solvent was removed under reduced pressure. The residue was diluted with water (100 mL). The separated solid was filtered and washed with water and dried under vacuum. The residue was purified by the Simpliflash system (0-5% methanol in CH2Cl2 as eluent) to give the title compound as an off-white solid. Yield: 30 mg (7%). MP 264-266° C. 1H NMR (400 MHz, CD3OD): δ 8.60 (s, 1H), 8.10 (d, J=8.98 Hz, 1H), 7.65 (d, J=8.98 Hz, 1H), 6.85 (d, J=1.95 Hz, 1H), 6.55 (d, J=1.95 Hz, 1H), 5.05 (s, 2H), 3.96 (s, 6H).

Provenance & Evidence