1: 73 percent 2: DMSO, 80percentig NaH / 0.25 h 3: dimethylsulfoxide / 1) room temp., 2) 1 h, 40 deg C, 3 h, 3) room temp., overnight 4: diethyl ether 5: H2 / Pt / ethanol / 760 Torr 6: 10percentig aq. KOH / 1) EtOH, 2) EtOH, reflux, 5 h View Scheme

1: DMSO, 80percentig NaH / 0.25 h 2: dimethylsulfoxide / 1) room temp., 2) 1 h, 40 deg C, 3 h, 3) room temp., overnight 3: diethyl ether 4: H2 / Pt / ethanol / 760 Torr 5: 10percentig aq. KOH / 1) EtOH, 2) EtOH, reflux, 5 h View Scheme

1: diethyl ether 2: H2 / Pt / ethanol / 760 Torr 3: 10percentig aq. KOH / 1) EtOH, 2) EtOH, reflux, 5 h View Scheme

1: H2 / Pt / ethanol / 760 Torr 2: 10percentig aq. KOH / 1) EtOH, 2) EtOH, reflux, 5 h View Scheme

1: dimethylsulfoxide / 1) room temp., 2) 1 h, 40 deg C, 3 h, 3) room temp., overnight 2: diethyl ether 3: H2 / Pt / ethanol / 760 Torr 4: 10percentig aq. KOH / 1) EtOH, 2) EtOH, reflux, 5 h View Scheme

potassium hydroxide 1) EtOH, 2) EtOH, reflux, 5 h; Yield given;