ueber mehrere Stufen;

1: With 1,3-Dichloro-5,5-dimethyl-2,4-imidazolidinedione in 1,2-dichloro-ethane T=0°C; 2 h; 2: With sodium hydroxide in water; 1,2-dichloro-ethane T=0 - 50°C; 4.5 h; 3: With hydrogenchloride in water; 1,2-dichloro-ethane T=0°C; Product distribution / selectivity;

(i) H2, Pd-C, H2O, iPrOH, (ii) /BRN= 385737/, Py, (iii) /BRN= 102415/; Multistep reaction;