Ethyl Acetate → 2-[(S)-4-Boc-3-benzylpiperazinyl]-6-chloropyrazine

Participants

Reaction Conditions

Reaction Steps

To a solution of 2,6-dichloropyrazine 114 (0.1 g, 0.67 mmol.) and (S)-1-Boc-2-benzylpiperazine 107 (0.37 g, 1.34 mmol) in dioxane (2 mL) and trifluoromethylbenzene (2 mL) was added diisopropylethylamine (0.26 g, 2.0 mmol). The reaction mixture was heated in a microwave reactor at 180° C. for 20 minutes. Ethyl acetate (100 mL) was added. The organic layer was washed with saturated ammonium chloride solution, water and brine. The organic layer was dried over sodium sulfate. The organic solvent was evaporated under reduced pressure. The crude product was purified by flash column chromatography to yield the desired 2-[(S)-4-Boc-3-benzylpiperazinyl]-6-chloropyrazine 115 (0.234 g, 0.6 mmol).

Provenance & Evidence