Nitromethane → 2-Methoxy-3-(2-nitroethenyl)-5-ethyl-6-methylpyridine

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Reaction Steps

A mixture of 2-methoxy-5-ethyl-6-methylnicotinaldehyde (2.25 g, 12.6 mmol), nitromethane (1.9 g, 31.1 mmol), monomethylamine hydrochloride (69 mg) and sodium hydroxide (20 mg) in absolute ethanol (1.3 mL) was stirred at ambient temperature for three days. This mixture was diluted with methanol and the precipitated yellow crystalline product was collected by filtration to yield 2.39 g (86%), m.p. 105°-107° C.

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