反应详情

温度

80 °C

To a suspension of 1.05 g (4.21 mmol) 3-iodo-isonicotinic acid in 15 ml dimethoxyethane were added successively 0.243 g tetrakis(triphenylphosphine)palladium(0), 4.2 ml 2 M sodium carbonate solution in water and 0.69 g (5.05 mmol) o-tolylboronic acid. The mixture was heated under argon at 80° C. for 18 h. After cooling to room temperature the phases were separated and the organic phase was washed twice with water (pH=9). The combined aqueous layers were than adjusted to pH=3 and extracted with five portions ethyl acetate. The combined organic layers were washed with brine, dried (magnesium sulfate) and evaporated. Chromatography of the residue afforded 0.68 g (75%) of the title compound as pale yellow crystals.

1. temperatureAfter cooling to room temperature the phases
2. customwere separated
3. washthe organic phase was washed twice with water (pH=9)
4. extractionextracted with five portions ethyl acetate
5. washThe combined organic layers were washed with brine
6. dry with materialdried (magnesium sulfate)
7. customevaporated