4-Isopropylaniline → N-(4-(Dimethylamino)benzyl)-4-isopropylbenzenamine

Participants

Reaction Steps

To a solution of 4-dimethylaminobenzaldehyde (11 g) in toluene (200 mL) were added 4-isopropylaniline (10 g) and molecular sieves 4A (20 g) under ice-cooling, and the mixture was stirred at room temperature for one day. The molecular sieves 4A was filtered off from the reaction mixture, and the obtained filtrate was concentrated under reduced pressure. The residue was dissolved in methanol (200 mL) and sodium borohydride (2.3 g) was added under ice-cooling. The mixture was stirred at room temperature for 5 hr. After methanol was distilled away, water was added to the residue, and the mixture was extracted with chloroform. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated to give (4-dimethylaminophenylmethyl)(4-isopropylphenyl)amine (13.6 g). melting point: 71-73° C.

Provenance & Evidence