1: N-tert-butoxycarbonyl-β-alanine With O-<[cyano(ethoxycarbonyl)methylene]amino>-1,1,3,3-tetramethyluronium tetrafluoroborate in DMF (N,N-dimethyl-formamide) T=20°C; 0.25 h; 2: 2-methyl-quinoline-4,6-diamine With n-ethyl morpholine in DMF (N,N-dimethyl-formamide) T=20°C; 24 h;