反应详情

温度

60 °C

Trimethylaluminium (0.751 ml, 1.50 mmol) was added dropwise to a stirred suspension of 5-[2-(3,5-dimethoxyphenyl)ethyl]-2H-pyrazol-3-amine (148 mg, 0.60 mmol) and ethyl 5-(4-propan-2-yl-1,4-diazepan-1-yl)thiophene-2-carboxylate (178 mg, 0.60 mmol) in toluene (3.002 ml) at 25° C. The resulting solution was stirred at 60° C. for 18 h. The cooled reaction mixture was added to methanol (50 mL) and treated with HCL (2M aqueous solution, to pH7 or below) and purified by ion exchange chromatography, using a SCX column. The desired product was eluted from the column using 7M NH3/MeOH and evaporated to dryness to afford impure material. 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 (123 mg, 41%) as a yellow solid.

1. customThe cooled reaction mixture
2. custompurified by ion exchange chromatography
3. washThe desired product was eluted from the column
4. customevaporated to dryness
5. customto afford impure material
6. customThe crude product was purified by preparative HPLC
7. additionFractions containing the desired compound
8. customwere evaporated to dryness