Sodium Hydroxide → N,N-diisopropyl-3-phenyl-3-(2-hydroxy-5-methylphenyl)propionamide

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Reaction Steps

A three-necked round-bottom flask equipped with condenser, mechanical stirrer, thermometer, is loaded with N,N-diisopropyl-3-phenyl-3-p-tolyloxy-propionamide (1.0 g; 0.0029 mol) and polyphosphoric acid (16.5 g). After four hours under stirring at room temperature the reaction is completed. The reaction mixture is poured in ice/water (10 g), alkalinized to pH 9-10 with NaOH 50% w/w and left under stirring for 30 minutes, then diluted with toluene (30 ml). The phases are separated and the aqueous phase is extracted with toluene (2×30 ml). The combined organic phases are dried over sodium sulfate and evaporated to dryness. The resulting oil is purified by flash chromatography (hexane/ethyl acetate 7:3). 0.59 g of product, as a pale yellow oil, are obtained.

Provenance & Evidence