Dimethylformamide → Cyclopropanecarboxylic acid [(3-chloropyrazin-2-yl)-(4-phenoxyphenyl)-methyl]-amide

Participants

Reaction Steps

In a 10 mL flask were added C-(3-chloropyrazin-2-yl)-C-(4-phenoxyphenyl)-methylamine (110 mg, 0.00035 mol), cyclopropanecarboxylic acid (0.056 mL, 0.00070 mol), DIEA (0.55 mL, 0.0032 mol), TBTU (0.17 g, 0.00053 mol) and DMF (5 mL, 0.07 mol). The reaction mixture was stirred at rt for 10 min. Reaction was left to stir over weekend. The reaction mixture was concentrated in vacuo, dissolved in DCM and washed with sat aq NaHCO3 followed by brine. The organics were collected and concentrated in vacuo to give 160 mg of the compound as a yellow solid. Purification by prep TLC in 60% EtOAc: hexanes afforded 55 mg of the title compound as a yellow solid. The compound was carried on to the next step. MS (ES+): m/z 380.08 (20)[MH+]. HPLC: tR=3.56 min (Open lynx polar—5 min).

Provenance & Evidence