反应详情

温度

60 °C

Trimethylaluminium (2M in toluene, 1.23 mL, 2.46 mmol) was added dropwise to a stirred suspension of 5-[2-(3,5-dimethoxyphenyl)ethyl]-2H-pyrazol-3-amine (243 mg, 0.98 mmol) and methyl 2-(4-methyl-3-oxopiperazin-1-yl)pyrimidine-5-carboxylate (246 mg, 0.98 mmol) in toluene (5.00 mL) at 25° C. The resulting solution was stirred at 60° C. for 24 h. The reaction mixture was added to methanol (100 mL), then 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 impure product. The crude product was purified by preparative HPLC, using decreasingly polar mixtures of water (containing 0.1% TFA) and MeCN as eluents. Fractions containing the desired compound were evaporated to dryness to afford the title compound (204 mg, 45%) 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 impure product
5. customThe crude product was purified by preparative HPLC
6. additionFractions containing the desired compound
7. customwere evaporated to dryness