Triethylamine → 3,5-Dichloro-2-cyanopyridine

Participants

Reaction Steps

3,5-Dichloropyridine-N-oxide (10.0 g, 61 mmol), trimethysilylcyanide (25 mL, 183 mmol) and triethylamine (17 mL, 122 mmol) combined in acetonitrile (60 mL) and heated to reflux for 6 hr. The solvent was evaporated and the residue was partitioned between diethyl ether and 5% aq. NaHCO3. The organic phase was dried (MgSO4), evaporated, and the product purified by chromatography over silica gel to yield 10.0 g (97%) of the title compound: 1H NMR (300 MHz, CDCl3) δ 7.92 (d, 1H), 8.58 (d, 1H).

Provenance & Evidence