1: NaH / tetrahydrofuran; dimethylformamide 2: 10 percent HCl / methanol / 70 °C 3: 2.) copper(I) iodide / 2.) THF, dimethylsulfide 4: NaH / tetrahydrofuran; dimethylformamide 5: 1.) BH3; 2.) 30 percent H2O2, 12 percent NaOH / 1.) THF 6: mesyl chloride, triethylamine / CH2Cl2 7: H2, HCl / 10 percent Pd/C / ethanol View Scheme