1.1: 43 percent / Ti(O-iPr)4; (+)-diisopropyl tartrate; tert-butyl hydroperoxide / molecular sieves 4 Angstroem / CH2Cl2 / 24 h / -20 °C 2.1: CH2Cl2 / 2 h / 0 - 25 °C 2.2: 86 percent / potassium carbonate / methanol; H2O / 18 h / 0 - 25 °C 3.1: 65 percent / sodium hydroxide; tert-butyl hypochlorite; potassium osmate / ethyldiisopropylamine / propan-1-ol; H2O / 3 h / 25 °C 4.1: NaOH / methanol; H2O / 25 °C 4.2: 77 percent / 3 h / 90 °C View Scheme