HCID 178487647, compound → HCID 178487645, compound

Participants

Reaction Steps

4-Hydroxy-8-(3-methoxy-4-phenylsulfinylphenyl)pyrazolo[1,5-a]-1,3,5-triazine dihydrate (15 g) is suspended in ethyl acetate (450 ml), and the mixture refluxed for 3 hours. After cooling, the precipitate is separated by filtration and is again suspended in ethyl acetate (400 ml), and the mixture is refluxed for 3 hours. After cooling, the precipitate is separated by filtration and dried under reduced pressure at 120° C. for 50 hours to give the title compound (13.7 g).

Provenance & Evidence