Water → 3-Methyl-2-(2-methylphenyl)pyridine

Participants

Reaction Steps

A mixture of 2-bromo-3-methylpyridine (1.09 g; 6.34 mmol), o-tolylboronic acid (1.29 g; 9.50 mmol), and Pd(PPh3)4 (147 mg; 2 mol %) in DME (30 ml) is stirred for 10 minutes at room temperature. Sodium carbonate (32 ml of 1M solution in water; 32 mmol) is added to this mixture and the mixture is heated for 16 hours at 80° C. The reaction mixture is treated with water and extracted with dichloromethane. The combined extracts are washed with brine, dried over sodium sulfate, and concentrated in vacuo. The residue is purified by flash chromatography over silica gel (elution with 20% EtOAc/Hexane) to 3-methyl-2-o-tolyl-pyridine as a yellow oil. 1H NMR(300 MHz, CDCl3) δ 8.51(d, 1H), 7.58(d, 1H), 7.27-7.15(m, 5H), 2.14(s, 3H), 2.10(s, 3H).

Provenance & Evidence