1: 1) Li / 1) THF, reflux, 2) DMSO, 60 - 65 deg C, 3h 2: LiAlH4 / bis-(2-methoxy-ethyl) ether; tetrahydrofuran / 140 °C View Scheme

lithium 1) THF, reflux, 2) DMSO, 60 - 65 deg C, 3h; Yield given. Multistep reaction;