Trifluoroacetic acid → HCID 46866123, compound

Participants

Reaction Steps

216 mg of 1-(t-butoxycarbonyl)-3-cyanoazetidine was dissolved in 2.5 ml of methylene chloride, and 1 ml of trifluoroacetic acid was added thereto, and the mixture was stirred at room temperature overnight. The solvent was distilled off under reduced pressure to obtain brown oil. The obtained oil was dissolved in 4 ml of degassed 1,4-dioxane, and 302 mg of triethylamine, 205 mg of (S)-6-chloro-N2-[1-(4-fluorophenyl)ethyl]-N4-(pyrazin-2-yl)pyrimidine-2,4-diamine, 57 mg of 2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl, 229 mg of sodium t-butoxide and 62 mg of tris(dibenzylideneacetone)(chloroform)dipalladium were added in turn, and the mixture was stirred at 90° C. for 3 hours under argon atmosphere. The reaction solution was diluted with ethyl acetate. The solution was washed in turn with water and brine and then dried over magnesium sulfate. The solvent was distilled off under reduced pressure, and then the obtained residue was purified by silica gel column chromatography to obtain 58 mg of the objective compound as pale yellow powder.

Provenance & Evidence