sodium hydroxide; thexylborane; dihydrogen peroxide 1.) THF, 0 deg C -> r.t., 8 h; Yield given. Multistep reaction;

manganese(IV) oxide Yield given. Multistep reaction;

1: 67 percent / NBS, (CH3)2S / CH2Cl2 / 2.5 h / 0 °C 2: 1.) Zn, 1,2-dibromoethane, finelly crushed glass 2.) HCl / 1.) THF, 45-50 gradC: 2.) acidic hidrolysis View Scheme

jones reagent in acetone 3 h;