Triethylamine → Methanone, [(3R)-1-(4-amino-5-nitro-2-pyrimidinyl)-3-piperidinyl]-1-pyrrolidinyl-

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-chloro-5-nitropyrimidin-4-amine (670 mg, 3.84 mmol, 80% pure), (R)-piperidin-3-yl(pyrrolidin-1-yl)methanone hydrochloride (prepared by the method described in Steps 1 and 2 of Intermediate 1, 560 mg, 2.56 mmol) and triethylamine (0.761 mL, 5.46 mmol) in dimethylsulfoxide (5 mL) was heated to 100° C. for 5 h. The mixture was diluted with ethyl acetate (80 mL), washed with water and brine, dried over sodium sulfate and concentrated. The crude material was purified via flash chromatography (ethyl acetate/heptane: 40-70-100%) to afford (R)-(1-(4-amino-5-nitropyrimidin-2-yl)piperidin-3-yl)(pyrrolidin-1-yl)methanone as a yellow solid (420 mg). 1H NMR (500 MHz, DMSO-d6) δ 1.45 (t, 1H), 1.62 (d, 1H), 1.72-1.82 (m, 4H), 1.88 (d, 4H), 2.56 (br s, 1H), 2.90-3.04 (m, 2H), 3.28 (t, 2H), 3.37-3.62 (m, 2H), 4.59-4.87 (m, 2H), 8.00 (br s, 1H), 8.16 (br s, 1H), 8.90 (s, 1H); MS (ES+) (M+H) 321.2.

Provenance & Evidence