1: 55 percent / VO(acac)2, t-BuOOH / CH2Cl2; H2O / 2 h / Ambient temperature 2: 1.) MsCl, Et3N / 1.) DCM, 0 deg C to rt, 30 min, 2.) THF, MeOH, rt, 2 h View Scheme

1: pyridine 2: 76 percent / bis-(2-methoxy-ethyl) ether / 180 °C 3: 98 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h / 20 °C View Scheme