1-Bromo-3-methylbutane → HCID 58966937, compound

Participants

Reaction Steps

According to Scheme 21: The title compound was prepared according to Example 1 Step 2 from 1,2-dihydro-2-oxo-4-(thiophen-2-yl)pyridine-3-carbonitrile (1 eq, 0.50 mmol, 0.10 g) and 1-bromo-3-methylbutane (1.5 eq, 0.70 mmol, 0.10 g). Reaction conditions: 17 hours at 60° C. in acetonitrile (10 mL). The crude product was purified by chromatography over silicagel (AIT Flashsmart prepacked column SiO2, cyclohexane/AcOEt 80/20) and recrystallized in pentane/Et2O yielding the title compound (88 mg, 0.30 mmol, 65%) as a yellow solid. M.p.: 123° C.; LC (XTerra RP18, 3.5 μm, 3.0×50 mm Column): RT=4.29 min; MS m/z (CI) [MH]+=273; 1H NMR (300 MHz, DMSO-d6) δ 0.92 (d, J=5.6 Hz, 6H), 1.48-1.63 (m, 3H), 3.90-4.02 (m, 2H), 6.72 (d, J=7.2 Hz, 1H), 7.32 (d, J=8.4 Hz, 1H), 7.96-8.04 (m, 2H), 8.08 (d, J=7.2 Hz, 1H).

Provenance & Evidence