1: 3-Methoxy-4-nitrobenzoic acid With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine in dichloromethane T=25°C; 1 h; 2: 1-methyl-piperidin-4-ylamine in dichloromethane T=20°C; 16 h; Product distribution / selectivity;

triethylamine in N,N-dimethyl-formamide; toluene T=55 - 65°C; 1 h; Product distribution / selectivity;