1: 93 percent / aqueous HCl (d 1.18) / petroleum ether / 6 h / 20 - 25 °C 2: 1.) 50percent NaH / 1.) HMPA, 20 degC - 25 degC, 1 h; 50 degC - 60 degC, 2 h; 2.) 50 degC, 20 h View Scheme

1: 65 percent / NaBH4/AlCl3 / bis-(2-methoxy-ethyl) ether / 2 h / 25 °C 2: 93 percent / aqueous HCl (d 1.18) / petroleum ether / 6 h / 20 - 25 °C 3: 1.) 50percent NaH / 1.) HMPA, 20 degC - 25 degC, 1 h; 50 degC - 60 degC, 2 h; 2.) 50 degC, 20 h View Scheme

sodium hydride 1.) HMPA, 20 degC - 25 degC, 1 h; 50 degC - 60 degC, 2 h; 2.) 50 degC, 20 h; Yield given. Multistep reaction;

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