New Zealand albino male rabbit cornea homogenate in phosphate buffer T=37°C; 24 h; Kinetics; Further Variations:Reagents;

1: 38 percent / Et4N(+)*Cl(-), N,N-dimethylaniline, POCl3 / acetonitrile / 0.17 h / Heating 2: 86 percent / NH3 / methanol / 18 h / 90 °C View Scheme

1: 38 percent / Et4N(+)*Cl(-), N,N-dimethylaniline, POCl3 / acetonitrile / 0.17 h / Heating 2: 86 percent / thiourea / propan-2-ol / 18 h / Heating 3: 73 percent / conc. NH4OH / methanol / 24 h / Ambient temperature 4: 38 percent / Raney Ni / H2O; ethanol / 24 h / Heating View Scheme