N-methyl-2,2,6,6-tetramethylpiperidine; t-BuON=NOt-Bu in acetonitrile T=60°C; 5 h;

1: 2-bromo-2-methyl-propionic acid With 1,1'-carbonyldiimidazole in dichloromethane 0.25 h; Heating; 2: 2-phenyl-ethanol in dichloromethane 2 h; Heating; Further stages.;

in benzene 3 h; Ambient temperature;