1,1-二乙氧基-2-(2,2-二乙氧基乙氧基)乙烷

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Hydroxyacetaldehyde diethylacetal (3.75 g) was added to sodium hydride (0.8 g, 80% in mineral oil) in tetrahydrofuran (100 ml) under an atmosphere of nitrogen. The mixture was stirred and bromoacetaldehyde diethyl acetal (5.0 g) and potassium iodide (0.1 g) were added. The mixture was heated to reflux for 16 hours, water added and evaporated under reduced pressure. The residue was dissolved in diethyl ether, the organic phase washed with water, dried (MgSO4) and evaporated under reduced pressure to give bis(2,2-diethoxyethyl)ether, 3.43 g, as a yellow oil. The mixture was heated to reflux for 16 hours evaporated under reduced pressure The residue was dissolved in diethyl ether the organic phase washed with water dried (MgSO4) evaporated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Hydroxyacetaldehyde diethylacetal (3.75 g) was added to sodium hydride (0.8 g, 80% in mineral oil) in tetrahydrofuran (100 ml) under an atmosphere of nitrogen. The mixture was stirred and bromoacetaldehyde diethyl acetal (5.0 g) and potassium iodide (0.1 g) were added. The mixture was heated to reflux for 16 hours, water added and evaporated under reduced pressure. The residue was dissolved in diethyl ether, the organic phase washed with water, dried (MgSO4) and evaporated under reduced pressure to give bis(2,2-diethoxyethyl)ether, 3.43 g, as a yellow oil. The mixture was heated to reflux for 16 hours evaporated under reduced pressure The residue was dissolved in diethyl ether the organic phase washed with water dried (MgSO4) evaporated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Hydroxyacetaldehyde diethylacetal (3.75 g) was added to sodium hydride (0.8 g, 80% in mineral oil) in tetrahydrofuran (100 ml) under an atmosphere of nitrogen. The mixture was stirred and bromoacetaldehyde diethyl acetal (5.0 g) and potassium iodide (0.1 g) were added. The mixture was heated to reflux for 16 hours, water added and evaporated under reduced pressure. The residue was dissolved in diethyl ether, the organic phase washed with water, dried (MgSO4) and evaporated under reduced pressure to give bis(2,2-diethoxyethyl)ether, 3.43 g, as a yellow oil. The mixture was heated to reflux for 16 hours evaporated under reduced pressure The residue was dissolved in diethyl ether the organic phase washed with water dried (MgSO4) evaporated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Hydroxyacetaldehyde diethylacetal (3.75 g) was added to sodium hydride (0.8 g, 80% in mineral oil) in tetrahydrofuran (100 ml) under an atmosphere of nitrogen. The mixture was stirred and bromoacetaldehyde diethyl acetal (5.0 g) and potassium iodide (0.1 g) were added. The mixture was heated to reflux for 16 hours, water added and evaporated under reduced pressure. The residue was dissolved in diethyl ether, the organic phase washed with water, dried (MgSO4) and evaporated under reduced pressure to give bis(2,2-diethoxyethyl)ether, 3.43 g, as a yellow oil. The mixture was heated to reflux for 16 hours evaporated under reduced pressure The residue was dissolved in diethyl ether the organic phase washed with water dried (MgSO4) evaporated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Glycolaldehyde diethyl acetal (45.4 g, 338 mmol) was added dropwise to a stirred solution of sodium hydride (14.3 g, 60% dispersion in mineral oil, 357 mmol) in xylene (100 ml), and the reaction heated under reflux for 1 hour. The reaction mixture was cooled to room temperature and bromoacetaldehyde diethyl acetal (100 g, 507 mmol) was added. The resulting solution was heated under reflux for 20 hours, then cooled to room temperature. The solvent was removed under reduced pressure, and the residual solution was distilled under reduced pressure (80° C. @ 6 mm Hg), to afford the title compound as a colourless oil, 60.8 g. the reaction heated under reflux for 1 hour The resulting solution was heated under reflux for 20 hours cooled to room temperature The solvent was removed under reduced pressure the residual solution was distilled under reduced pressure (80° C. @ 6 mm Hg)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Hydroxyacetaldehyde diethylacetal (3.75 g) was added to sodium hydride (0.8 g, 80% in mineral oil) in tetrahydrofuran (100 ml) under an atmosphere of nitrogen. The mixture was stirred and bromoacetaldehyde diethyl acetal (5.0 g) and potassium iodide (0.1 g) were added. The mixture was heated to reflux for 16 hours, water added and evaporated under reduced pressure. The residue was dissolved in diethyl ether, the organic phase washed with water, dried (MgSO4) and evaporated under reduced pressure to give bis(2,2-diethoxyethyl)ether, 3.43 g, as a yellow oil. The mixture was heated to reflux for 16 hours evaporated under reduced pressure The residue was dissolved in diethyl ether the organic phase washed with water dried (MgSO4) evaporated under reduced pressure