1: 3-phenyl-2E-propenoic acid With 4-(N,N-dimethlyamino)pyridine; N'-(3-dimethylaminopropyl)-N-ethylcarbodiimide in dichloromethane 0.0833333 h; Cooling with ice; 2: (cyclopent-1-yl)amine in dichloromethane T=20°C; Cooling with ice;