1: 80 percent / LiAlH4 / tetrahydrofuran; bis-(2-methoxy-ethyl) ether 2: 1) 9-BBN, 2) aq. NaOH/30 percent H2O2 / 1) THF, room temp., 1 h View Scheme

1: 80 percent / LiAlH4 / tetrahydrofuran; bis-(2-methoxy-ethyl) ether 2: 1) 9-BBN, 2) aq. NaOH/30 percent H2O2 / 1) THF, room temp., 1 h 3: 80 percent / pyridine View Scheme

1: 80 percent / LiAlH4 / tetrahydrofuran; bis-(2-methoxy-ethyl) ether 2: 1) 9-BBN, 2) aq. NaOH/30 percent H2O2 / 1) THF, room temp., 1 h 3: 63 percent / pyridinium-chlorochromate / CH2Cl2 / 2 h View Scheme