Sodium Carbonate → HCID 50943451, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-bromo-N-(5-cyclopropyl-1H-pyrazol-3-yl)-5-fluoropyrimidin-4-amine (250 mg, 0.84 mmol, 1.0 eq), thiophen-2-ylboronic acid (150 mg, 1.18 mmol, 1.4 eq), Pd(dppf)Cl2 (69 mg, 0.084 mmol, 0.1 eq), Na2CO3 (356 mg, 3.36 mmol, 4 eq), 1,4-dioxane (10 ml) and water (1.5 ml) was stirred at 100° C. under a nitrogen atmosphere for 15 h. The reaction mixture was allowed to cool to room temperature and concentrated to give a residue. The residue was purified by silica gel chromatography (CH2Cl2/methanol 500:1 to 100:1 as eluent) to afford title compound N-(5-cyclopropyl-1H-pyrazol-3-yl)-5-fluoro-2-(thiophen-2-yl)pyrimidin-4-amine (Compound 41) (71.2 mg, 28.1%) as a solid. LC-MS (m/z)=302.1 [M+H]+; 1H NMR (400 MHz, DMSO-d6): δ 0.77 (d, J=4 Hz, 2H), 1.01 (d, J=7.2 Hz, 2H), 1.97 (t, J=4.4 Hz, 1H), 6.58 (s, 1H), 7.21 (t, J=4.2 Hz, 1H), 7.76 (m, 2H), 8.32 (d, J=3.2 Hz, 1H), 10.12 (s, 1H), 12.24 (s, 1H).

Provenance & Evidence