Bromoform → 4-bromo-2-[[(2,3-difluorophenyl)methyl]thio]-7(8H)-pteridinone

Participants

Reaction Conditions

Reaction Steps

The product of step (a) (0.5 g) was suspended in DMSO (10 ml) and bromoform (10 ml) and the mixture was heated to 125° C. Isoamylnitrite (2 ml) was added and the mixture was stirred at 125° C. for 5 minutes before being cooled in an ice bath. Solvent was removed by evaporation under high vacuum and the residue suspended in dichloromethane (100 ml). This suspension was washed with saturated aqueous ammonium chloride (50 ml) and then filtered through a plug of celite. The filtrate was evaporated and purified by column chromatography, eluting with 10% ethyl acetate in dichloromethane to give the subtitled compound as a white solid (0.22 g).

Provenance & Evidence