Water → 1-[3-((E)-2-cyclohexylvinyl)pyrido[2,3-b]pyrazin-6-yl]-3-ethylurea

Participants

Reaction Conditions

Reaction Steps

99.6 mg of 1-(3-chloropyrido[2,3-b]pyrazin-6-yl)-3-ethylurea (0.40 mmol), 73.6 mg of cyclohexylvinylboronic acid (0.48 mmol), 84.4 mg of sodium carbonate (0.80 mmol) and 33.4 mg of [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (0.04 mmol) were initially charged in 6 ml of dimethylformamide/water (1:1) under nitrogen. The mixture was then heated to 90° C. for 6.5 h. Distilled water was then added to the reaction mixture and the resulting precipitate was filtered off with suction. The further purification was effected by column chromatography on silica gel (ethyl acetate/heptane eluent mixture). A light brown solid was obtained.

Provenance & Evidence