1: dimethylsulfoxide 2: borane-THF 3: K2CO3 / CHCl3 4: dichloroacetic acid 6: H2 / Pd/C / methanol 7: 65 percent / chloranil / xylene / 150 °C 8: 70 percent / di-isobutyl aluminiumhydride / tetrahydrofuran / 0 °C 9: 55 percent / DCC, dimethylaminopyridine / diethyl ether 10: 52 percent / AgO / dioxane; aq. HNO3 View Scheme