1: SnCl4 / benzene / Ambient temperature 2: p-toluenesulfonic acid / 150 °C 3: 98 percent / Zn, CH3COOH 4: DCC, / ethyl acetate 5: 1.) K2CO3, Cu, 2.) alkali / 1.) mesitylene, reflux, 22 h 6: 95 percent / HCl / ethanol 7: NaBH4 / dioxane; H2O / 50 °C 8: Al2O3 CBT 1 (PECHINEY) / benzene / Heating 9: NaH / tetrahydrofuran; hexamethylphosphoric acid triamide / Heating View Scheme

1: DCC, / ethyl acetate 2: 1.) K2CO3, Cu, 2.) alkali / 1.) mesitylene, reflux, 22 h 3: 95 percent / HCl / ethanol 4: NaBH4 / dioxane; H2O / 50 °C 5: Al2O3 CBT 1 (PECHINEY) / benzene / Heating 6: NaH / tetrahydrofuran; hexamethylphosphoric acid triamide / Heating View Scheme

1: p-toluenesulfonic acid / 150 °C 2: 98 percent / Zn, CH3COOH 3: DCC, / ethyl acetate 4: 1.) K2CO3, Cu, 2.) alkali / 1.) mesitylene, reflux, 22 h 5: 95 percent / HCl / ethanol 6: NaBH4 / dioxane; H2O / 50 °C 7: Al2O3 CBT 1 (PECHINEY) / benzene / Heating 8: NaH / tetrahydrofuran; hexamethylphosphoric acid triamide / Heating View Scheme

1: 98 percent / Zn, CH3COOH 2: DCC, / ethyl acetate 3: 1.) K2CO3, Cu, 2.) alkali / 1.) mesitylene, reflux, 22 h 4: 95 percent / HCl / ethanol 5: NaBH4 / dioxane; H2O / 50 °C 6: Al2O3 CBT 1 (PECHINEY) / benzene / Heating 7: NaH / tetrahydrofuran; hexamethylphosphoric acid triamide / Heating View Scheme

1: NaBH4 / dioxane; H2O / 50 °C 2: Al2O3 CBT 1 (PECHINEY) / benzene / Heating 3: NaH / tetrahydrofuran; hexamethylphosphoric acid triamide / Heating View Scheme

1: 95 percent / HCl / ethanol 2: NaBH4 / dioxane; H2O / 50 °C 3: Al2O3 CBT 1 (PECHINEY) / benzene / Heating 4: NaH / tetrahydrofuran; hexamethylphosphoric acid triamide / Heating View Scheme

1: Al2O3 CBT 1 (PECHINEY) / benzene / Heating 2: NaH / tetrahydrofuran; hexamethylphosphoric acid triamide / Heating View Scheme

1: 1.) K2CO3, Cu, 2.) alkali / 1.) mesitylene, reflux, 22 h 2: 95 percent / HCl / ethanol 3: NaBH4 / dioxane; H2O / 50 °C 4: Al2O3 CBT 1 (PECHINEY) / benzene / Heating 5: NaH / tetrahydrofuran; hexamethylphosphoric acid triamide / Heating View Scheme

sodium hydride in tetrahydrofuran; N,N,N',N',N'',N''-hexamethylphosphoric triamide Heating; Yield given;