反应详情

温度

60 °C

Trimethylaluminium (2M in toluene, 1.596 mL, 3.19 mmol) was added dropwise to a solution of 5-[2-(3,5-dimethoxyphenyl)ethyl]-2H-pyrazol-3-amine (314 mg, 1.27 mmol) and methyl 2-(3-(methoxymethyl)piperazin-1-yl)pyrimidine-5-carboxylate (338 mg, 1.27 mmol) in toluene (6.35 mL) at 25° C. The resulting mixture was stirred at 60° C. for 18 h under nitrogen. The reaction mixture was added to methanol (100 mL) and treated with HCl (2N aqueous solution, until pH was 7 or lower). The crude product was purified by ion exchange chromatography, using a SCX column. The desired product was eluted from the column using 7M NH3/MeOH and fractions were evaporated to dryness to afford the crude product as a yellow dry film. The crude product was purified by preparative HPLC, using decreasingly polar mixtures of water (containing 1% NH3) and MeCN as eluents. Fractions containing the desired compound were evaporated to dryness to afford the title compound (348 mg, 57%) as a white solid.

1. customThe crude product was purified by ion exchange chromatography
2. washThe desired product was eluted from the column
3. customwere evaporated to dryness
4. customto afford the crude product as a yellow dry film
5. customThe crude product was purified by preparative HPLC
6. additionFractions containing the desired compound
7. customwere evaporated to dryness