1H-1,2,4-Triazole → HCID 178509721、化合物

関与物質

反応手順

23.5 g of 1,2,4-triazole is combined under cooling in 250 ml of N,N-dimethylformamide in incremental portions with 14.15 g of sodium hydride, 60% in oil, and stirred at 25° for 1 hour until hydrogen release has ceased. To this solution is added 50 g of 4-(bromomethyl)benzonitrile in two portions under ice cooling at 5°, and the mixture is stirred for 2 hours at 25°. For working up purposes, 200 ml of water is added under ice cooling, the mixture is stirred for 1 hour, extracted with ethyl acetate, washed neutral with water, dried over sodium sulfate, concentrated to dryness under vacuum, and chromatographed on silica gel with dichloromethane/methanol, yielding 31.73 g of 4-[1-(1,2,4-triazolyl)methyl]benzonitrile as colorless crystals, mp. 72°-73°.

情報源と証拠