p-METHYLACETOPHENONE → HCID 88059415, compound

Participants

Reaction Steps

At first, 0.24 g (1.25 mmol) of p-toluenesulfonic acid monohydrate were added to a toluene solution (25 ml) containing 8.35 g (25 mmol) of 4-methylacetophenone (3c) as a ketone and 3.03 g (25 mmol) of (S)-1-phenylethylamine ((S)-2a) as an optically active primary amine, followed by heating under reflux for 24 hr and by removing water (formed as a by-product) with a Dean-Stark tube during the reaction, in order to conduct the reaction. Then, the reaction liquid after the reaction was washed with a saturated sodium hydrogencarbonate aqueous solution, followed by drying with sodium sulfate anhydride, then filtration, then concentration, and then vacuum drying, thereby obtaining as a crude product 5.66 g of (S)-N-(1-phenylethylidene)-1-(4-methylphenyl)-ethylamine ((S)-3ca, yield: 89%).

Provenance & Evidence