1: 97 percent 2: 82 percent / AcOH / xylene / Heating 3: 98 percent / TsOH 4: 97 percent / NaOMe, ammonia / methanol 5: 94 percent / TsCl 6: LiAlH4 7: Heating 8: 92 percent / POCl3 / toluene / Heating View Scheme

1: 97 percent 2: 82 percent / AcOH / xylene / Heating 3: 98 percent / TsOH 4: 97 percent / NaOMe, ammonia / methanol 5: 94 percent / TsCl 6: LiAlH4 7: Heating 8: 92 percent / POCl3 / toluene / Heating 9: 49 percent / Pd/C / decahydronaphthalene / Heating View Scheme