water; periodic acid in tetrahydrofuran; diethyl ether T=0 - 5°C; 0.166667 h; Yield given;

dimethylsulfide; sodium hydrogencarbonate; ozone 1.) MeOH, 1.5 h, -78 deg C, 2.) -78 deg C to RT, 2,5 h, MeOH; Yield given. Multistep reaction;