Water → 1-(4-Chlorophenyl)-2-(2,4-dichlorophenyl)ethane-1,2-dione

関与物質

反応手順

To a solution of 100 g (0.33 mol) of 2-(4-chlorophenyl)-1-(2,4-dichlorophenyl)ethanone in 1 L of DMSO, 75 g (0.42 mol) of NBS was added and the mixture was stirred over a weekend. The reaction was poured into 8 L of water and stirred for 30 min. The yellow solid formed was filtered and dried. This solid was purified by passing through a plug of 1 Kg of silica gel using hexane and 5% EtOAc-hexane to isolate the title compound. 1H NMR: (500 MHz, CDCl3): δ 7.4–8.0 (m, 7H).

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