Sodium Sulfite → HCID 66590055, compound

Participants

Reaction Conditions

Reaction Steps

A 2M solution of trimethylaluminium in toluene (0.691 mL, 1.38 mmol) was added dropwise to a stirred solution of ethyl 4-(3,3-dimethylpiperazin-1-yl)benzoate (145 mg, 0.55 mmol) and 5-[(3,5-dimethoxyphenyl)methoxy]-2H-pyrazol-3-amine (138 mg, 0.55 mmol) in toluene (5 mL) at 20° C., over a period of 5 mins under nitrogen. The resulting solution was stirred at 20° C. for 24 h. This was diluted with acetone (25 ml) and an excess of damp solid sodium sulphite was added. The mixture was stirred for 1 h and the solid filtered off. The solid was washed with 10% MeOH/DCM and the combined organics evaporated to dryness. 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 (27.0 mg, 10.49%) as a colourless gum.

Provenance & Evidence