Ammonia → 2-(dimethoxymethyl)-5-methyl-4-(trifluoromethyl)-1H-imidazole

関与物質

反応手順

NCS (870 mg, 6.51 mmol) and silver nitrate (1.48 g, 8.71 mmol) were dissolved in acetonitrile (40 mL) and distilled water (10 mL). 2,2,2-Trifluoro-1-(2-methyl-1,3-dithian-2-yl)ethanone obtained in Example (36a) (500 mg, 2.17 mmol) was added, and the mixture was stirred for 40 minutes. Thereafter, dimethoxyacetaldehyde (5.76 M aqueous solution, 0.4 mL, 23.0 mmol) and 28% aqueous ammonia (2 mL) were added, and the mixture was stirred at room temperature for 18 hours. The reaction solution was filtered through celite and then concentrated under reduced pressure. The resulting compound was used for the next reaction without purification.

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