Diisopropylethylamine → (S)-benzyl 1'-(5-ethylpyrimidin-2-yl)-2-oxo-1,4'-bipiperidin-3-ylcarbamate

Participants

Reaction Conditions

Reaction Steps

A flask was charged with (S)-benzyl 2-oxo-1,4′-bipiperidin-3-ylcarbamate hydrochloride (4.1 g, 11 mmol), 2-chloro-5-ethylpyrimidine (1.7 g, 12 mmol), DIEA (3.9 mL, 22 mmol), and DMF (30 mL). The reaction was heated to 100° C. overnight. The reaction was cooled to ambient temperature, concentrated and purified over silica gel (25-75% EtOAc in hexanes) to afford (S)-benzyl 1′-(5-ethylpyrimidin-2-yl)-2-oxo-1,4′-bipiperidin-3-ylcarbamate (2.8 g, 57% yield).

Provenance & Evidence