sodium hydroxide; hydrazine hydrate; ethylene glycol T=220°C;

chromium; acetic acid

sodium; hydrazine hydrate; ethylene glycol T=200°C;

sodium hydroxide; hydrazine hydrate in ethylene glycol

potassium hydroxide in ethanol

1: triethylamine / dichloromethane 2: n-butyllithium; N,N,N',N',N'',N''-hexamethylphosphoric triamide / tetrahydrofuran 3: hydrogen; palladium 10 on activated carbon / ethyl acetate 4: pyridinium chlorochromate / dichloromethane 5: sodium hexamethyldisilazane / tetrahydrofuran 6: tetrabutyl ammonium fluoride / tetrahydrofuran 7: hydrogen; palladium 10 on activated carbon / ethyl acetate View Scheme

1: n-butyllithium; N,N,N',N',N'',N''-hexamethylphosphoric triamide / tetrahydrofuran 2: hydrogen; palladium 10 on activated carbon / ethyl acetate 3: pyridinium chlorochromate / dichloromethane 4: sodium hexamethyldisilazane / tetrahydrofuran 5: tetrabutyl ammonium fluoride / tetrahydrofuran 6: hydrogen; palladium 10 on activated carbon / ethyl acetate View Scheme

1: hydrogen; palladium 10 on activated carbon / ethyl acetate 2: pyridinium chlorochromate / dichloromethane 3: sodium hexamethyldisilazane / tetrahydrofuran 4: tetrabutyl ammonium fluoride / tetrahydrofuran 5: hydrogen; palladium 10 on activated carbon / ethyl acetate View Scheme

1: pyridinium chlorochromate / dichloromethane 2: sodium hexamethyldisilazane / tetrahydrofuran 3: tetrabutyl ammonium fluoride / tetrahydrofuran 4: hydrogen; palladium 10 on activated carbon / ethyl acetate View Scheme

1: sodium hexamethyldisilazane / tetrahydrofuran 2: tetrabutyl ammonium fluoride / tetrahydrofuran 3: hydrogen; palladium 10 on activated carbon / ethyl acetate View Scheme