1: 81 percent / 20percent HCl / 15 h / Heating 2: 79 percent / p-toluenesulfonic acid monohydrate / toluene 3: 90 percent / LiAlH4 4: 83 percent 5: 0.1 N (CH3)3CONa / diethyl ether; 2-methyl-propan-2-ol / 20 h / Ambient temperature 6: 61 percent / 10percent H2SO4 / methanol / 24 h / Ambient temperature 7: 1) mesitol, molecular sieve, 2) K, aniline / 1) pyridine, anh. methylcyclohexane, 10 h, irradiation, 2) liq. NH3 8: 64 percent / diisobutylaluminiumhydride / toluene View Scheme

7: Irradiation View Scheme

1: 81 percent / 20percent HCl / 15 h / Heating 2: 79 percent / p-toluenesulfonic acid monohydrate / toluene 3: 90 percent / LiAlH4 4: 83 percent 5: 0.1 N (CH3)3CONa / diethyl ether; 2-methyl-propan-2-ol / 20 h / Ambient temperature 6: 61 percent / 10percent H2SO4 / methanol / 24 h / Ambient temperature 7: 1) mesitol, molecular sieve, 2) K, aniline / 1) pyridine, anh. methylcyclohexane, 10 h, irradiation, 2) liq. NH3 View Scheme

7: Irradiation View Scheme

1: 81 percent / 20percent HCl / 15 h / Heating 2: 79 percent / p-toluenesulfonic acid monohydrate / toluene 3: 90 percent / LiAlH4 4: 83 percent 5: 0.1 N (CH3)3CONa / diethyl ether; 2-methyl-propan-2-ol / 20 h / Ambient temperature 6: 61 percent / 10percent H2SO4 / methanol / 24 h / Ambient temperature 8: 49.4 mg / Cr(VI)-oxid, 95percent acetic acid / acetic acid / 2 h / Ambient temperature View Scheme