Trimethylaluminum → HCID 178462711, compound

Participants

Reaction Conditions

Reaction Steps

Trimethylaluminium (2M in toluene, 1.65 ml, 3.31 mmol) was added dropwise to a stirred suspension of methyl 2-(4-ethyl-3-methylpiperazin-1-yl)pyrimidine-5-carboxylate (303 mg, 1.15 mmol) and 5-[2-(3,5-dimethoxyphenyl)ethyl]-2H-pyrazol-3-amine (283 mg, 1.15 mmol) in toluene (5.73 ml) at room temperature. The resulting solution was stirred at 60° C. overnight. The reaction mixture was quenched into methanol (100 mL) and treated with HCl (2N aqueous solution, until the 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 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 (269 mg, 49%) as a cream solid.

Provenance & Evidence