Diisopropylethylamine → 4-Amino-6-[1-(3-pyridin-2-yl-imidazo[1,2-a]pyrazin-2-yl)-ethylamino]-pyrimidine-5-carbonitrile

Participants

Reaction Conditions

Reaction Steps

To a mixture of 1-(3-pyridin-2-yl-imidazo[1,2-a]pyrazin-2-yl)-ethylamine (250 mg, 1.04 mmol) and 4-amino-6-chloro-pyrimidine-5-carbonitrile (160 mg 1.04 mmol) in n-butanol (3 mL) was added DIEA (1.7 mL, 10.04 mmol) at rt. The reaction mixture was stirred at 110° C. overnight. The mixture was concentrated in vacuo. The residue was purified by column chromatography using silica gel (100-200 mesh) and 0-40% acetone in hexane to provide 4-amino-6-[1-(3-pyridin-2-yl-imidazo[1,2-a]pyrazin-2-yl)-ethylamino]-pyrimidine-5-carbonitrile: 1H NMR: (400 MHz, DMSO-d6) δ 1.537 (d, J=6.8 Hz, 3H), 5.837-5.906 (m, 1H), 7.269 (br s, 2H), 7.471-7.502 (m, 1H), 7.572-7.594 (m, 1H), 7.887-7.907 (m, 1H), 7.983-8.043 (m, 3H), 8.814-8.826 (m, 1H), 8.928-8.944 (m, 1H), 9.180 (d, J=1.2 Hz, 1H); LC-MS (ESI) m/z 358.2 [M+H]+.

Provenance & Evidence