Methanamine, N-methoxy-, hydrochloride (1:1) → N-methoxy-N-methyl-6-(trifluoromethyl)nicotinamide

Participants

Reaction Conditions

Reaction Steps

To a 1 L 3-neck flask equipped with an overhead stirrer, Claisen adaptor, nitrogen bubbler, 125 mL addition funnel, and thermocouple was added 6-(trifluoromethyl)nicotinoyl chloride (49.3 g, 235.2 mmol, Intermediate 15, step a), dichloromethane (493 mL), and N,O-dimethylhydroxylamine hydrochloride (25.63 g, 258.8 mmol). After the mixture was cooled to 7° C., diisopropylethylamine (90.263 mL, 517.6 mmol) was added such that the addition temperature did not exceed 16° C. After the addition, the reaction was allowed to warm to room temperature. The reaction was then transferred to a separatory funnel and the organic layer was washed with saturated NaHCO3 (2×100 mL) followed by water (100 mL) and then dried over sodium sulfate, and filtered. Solvent removal afforded the title compound as a brownish oil.

Provenance & Evidence