1: 88 percent / NaBH4 / 1,2-dimethoxy-ethane; methanol / 15 h / 70 °C 2: 84 percent / AlCl3, LiAlH4 / diethyl ether / 18 h 3: 49 percent / Et3N / CH2Cl2 / 2 h 4: 43 percent / Cs2CO3, tris(dibenzylideneacetone)dipalladium(0), tri-(2-furyl)phosphine / toluene / 21 h / 110 °C View Scheme

1: 88 percent / NaBH4 / 1,2-dimethoxy-ethane; methanol / 15 h / 70 °C 2: 84 percent / AlCl3, LiAlH4 / diethyl ether / 18 h View Scheme

1: 88 percent / NaBH4 / 1,2-dimethoxy-ethane; methanol / 15 h / 70 °C 2: 84 percent / AlCl3, LiAlH4 / diethyl ether / 18 h 3: 65 percent / Et3N / CH2Cl2 / 2 h View Scheme

sodium tetrahydroborate in methanol; ethylene glycol dimethyl ether T=70°C; 15 h;