反应详情

1,2-Dimethoxymethane (2 mL) was added to 6-Chloro-3-[2-(5-ethyl-pyridin-2-yl)-vinyl]-1H-indazole (130 mg, 0.354 mmol), tris(dibenzylideneacetone)dipalladium (16 mg, 0.018 mmol), -(dicyclohexylphosphino)biphenyl (25 mg, 0.071 mmol), K3PO4 (0.188 g, 0.885 mmol), and methyl anthranilate (0.092 mL, 0.71 mmol). The reaction was vacuum flushed with argon (4×) and then heated to 80 degrees Celsius for 19 hours. The reaction was diluted with EtOAc (20 mL) and filtered through a silica gel plug. After washing with EtOAc (50 mL), the solvent was removed by rotary evaporation. The crude oil was purified by chromatography (40 g silica gel, 30–40% EtOAc/hexanes) to yield the desired product (54 mg, 32%).

1. customflushed with argon (4×)
2. temperatureheated to 80 degrees Celsius for 19 hours
3. additionThe reaction was diluted with EtOAc (20 mL)
4. filtrationfiltered through a silica gel plug
5. washAfter washing with EtOAc (50 mL)
6. customthe solvent was removed by rotary evaporation
7. customThe crude oil was purified by chromatography (40 g silica gel, 30–40% EtOAc/hexanes)