p-Toluenesulfonic acid → HCID 178448170, compound

Participants

Reaction Steps

50 mg of (S)-α-[(S)-α-[(t-butylsulphonyl)methyl]hydrocinnamamido]-N-[(1S,2R,3S)-1-(cyclohexylmethyl)-2,3-dihydroxy-4-methylpentyl]imidazole-4-propionamide and 50 mg of p-toluenesulphonic acid in 3 ml of dimethoxypropane are stirred at room temperature overnight. The reaction mixture is thereafter poured into 2N sodium bicarbonate solution and extracted with ethyl acetate. The organic phases are washed with water, dried and evaporated, whereby there is obtained (S)-α-[(S)-α-[(t-butylsulphonyl)methyl]hydrocinnamamido]-N-[(S)-(cyclohexylmethyl)[(4R,5S)-5-isopropyl-2,2-dimethyl-1,3-dioxolan-4-yl]methyl]imidazole-4-propionamide as a solid, MS: 673 (M+H)+.

Provenance & Evidence