Formaldehyde → HCID 18755538, compound

Participants

Reaction Steps

5.7 g (10 mmol) of (3-methoxycarbonyl-6-trifluoromethylpyridine-2-ylmethyl)triphenylphosphonium bromide are dissolved at room temperature in a 2-phase system of 25 ml of chloroform and 2.1 g (20 mmol) of sodium carbonate and reacted, in 10 ml of water, with a 35% aqueous solution of 1.7 g (20 mmol) of formaldehyde. After 1.5 hours, the organic phase is separated off and filtered through silica gel. Methyl 2-vinyl-6-trifluoromethylnicotinate is obtained as an oil, 1H-NMR (CDCl3): 8.31, d, CH, 7.10, dd, CH, 7.09, d, CH, 6.68, dd, CH, 5.68, dd, CH, 3.97 ppm, s, OCH3.

Provenance & Evidence