hydrogen; palladium on activated charcoal in ethyl acetate

peracetic acid; n-butyllithium; acetic acid in tetrachloromethane; diethyl ether; water; pentane

1: With n-butyllithium in pentane T=-20 - -10°C; 0.25 h; 2: With boric acid trimethyl ester in pentane T=-30 - 0°C; 0.5 h; 3: in acetic acid T=-10 - 0°C; 0.5 h; Further stages.;