hydrogen; palladium on activated charcoal in methanol P=3750.3 Torr; 4 h;

ammonium chloride in methanol; dichloromethane; water

1: 71 percent / hydrogen / 5percent Pd-C / methanol / 4 h / 3750.3 Torr 2: 52 percent / N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline / ethanol / 20 h / Ambient temperature View Scheme