HCID 178490945, compound → HCID 178491168, compound

Participants

Reaction Steps

4-hydroxy-2-(pyridazin-3-yl)pyrimidine-5-carboxylic acid, 30-ie, (545 mg, 2.5 mmol) in 5 ml of thionyl chloride was heated at reflux overnight. Then it was concentrated under vacuum and the residue was dissolved in 10 ml of dichloromethane. To the mixture was added 4-(amino(4-methoxyphenyl)methyl)phenylphosphinic acid hydrochloride (1-1-e, 782.5 mg, 2.5 mmol) and TEA (505 mg, 5 mmol) in 10 ml of dichloromethane at 0° C. The mixture was stirred for 3 hours and then it was washed with sat. NH4Cl. The organic layer was concentrated under vacuum and the residue was purified on prep-HPLC to provide the product 9-2 (150 mg, 12%). 1H NMR (CD3OD, 300 MHz,): δ 9.37 (m, 1H), 8.83 (s, 1H), 8.51 (m, 1H), 8.15 (m, 1H), 7.80 (m, 2H), 7.53 (m, 2H), 7.23 (m, 2H), 6.79 (m, 2H), 6.56 (s, 1H), 6.34 (s, 1H), 3.77 (s, 3H).

Provenance & Evidence