1: LiAlH4 2: aq. PPTS / acetone 3: 1.) (R,R)-ethylenebis(tetrahydroindenyl) titanium difluoride, PhSiH3, pyrrolidine, MeOH, polymethylhydrosiloxane, 2.) MeOH / 1.) THF, RT, 2.) THF, 15 deg C View Scheme

1: 10 percent NaOH / 1 h / Heating 2: 70 percent / 4-dimethylaminopyridine, N,N'-dicyclohexylcarbodiimide / CHCl3 / 0.25 h / Ambient temperature 3: 92 percent / 20percent H2SO4, SiO2 / CHCl3 / 6 h 4: 20 percent / hexane / 6 h / Ambient temperature; Irradiation 5: 100 percent / H2SO4 / acetic acid / 0.5 h / Heating View Scheme

1: 10 percent NaOH / 1 h / Heating 2: 68 percent / 4-dimethylaminopyridine, N,N'-dicyclohexylcarbodiimide / CHCl3 / 0.25 h / Ambient temperature 3: 90 percent / 20percent H2SO4, SiO2 / CHCl3 / 6 h 4: 17 percent / hexane / 6 h / Ambient temperature; Irradiation View Scheme

1: 10 percent NaOH / 1 h / Heating 2: 68 percent / 4-dimethylaminopyridine, N,N'-dicyclohexylcarbodiimide / CHCl3 / 0.25 h / Ambient temperature 3: 90 percent / 20percent H2SO4, SiO2 / CHCl3 / 6 h 4: 17 percent / hexane / 6 h / Ambient temperature; Irradiation 5: H2SO4 / acetic acid / 0.5 h / Heating View Scheme

1: 10 percent NaOH / 1 h / Heating 2: 68 percent / 4-dimethylaminopyridine, N,N'-dicyclohexylcarbodiimide / CHCl3 / 0.25 h / Ambient temperature 3: 90 percent / 20percent H2SO4, SiO2 / CHCl3 / 6 h View Scheme

1: LiAlH4 2: NaH 3: aq. PPTS / acetone View Scheme