2,2-dimethoxyethyl benzoate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Aliquots of 2-benzoyloxyacetaldehyde dimethyl acetal (50.0 g) prepared according to Example 1, 2-mercaptoethanol (20.4 g), p-toluenesulfonic acid monohydrate (0.90 g) and toluene (250 mL) were placed in a three-neck flask, followed by heating. By-produced methanol was distilled off with the solvent. After distilling off about 150 mL, the reaction mixture was cooled to room temperature, was washed with a saturated aqueous sodium hydrogen carbonate solution and water and was dried over anhydrous sodium carbonate. After filtration and vacuum distillation at 144-147° C. and at 0.60 mmHg, the target compound (54.9 g) was obtained in a yield of 100%. were placed in a three-neck flask by heating By-produced methanol was distilled off with the solvent After distilling off about 150 mL was washed with a saturated aqueous sodium hydrogen carbonate solution and water was dried over anhydrous sodium carbonate After filtration and vacuum distillation at 144-147° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Aliquots of 2-benzoyloxyacetaldehyde dimethyl acetal (50.0 g) prepared according to Example 1, 2-mercaptoethanol (20.4 g), p-toluenesulfonic acid monohydrate (0.90 g) and toluene (250 mL) were placed in a three-neck flask, followed by heating. By-produced methanol was distilled off with the solvent. After distilling off about 150 mL, the reaction mixture was cooled to room temperature, was washed with a saturated aqueous sodium hydrogen carbonate solution and water and was dried over anhydrous sodium carbonate. After filtration and vacuum distillation at 144-147° C. and at 0.60 mmHg, the target compound (54.9 g) was obtained in a yield of 100%. were placed in a three-neck flask by heating By-produced methanol was distilled off with the solvent After distilling off about 150 mL was washed with a saturated aqueous sodium hydrogen carbonate solution and water was dried over anhydrous sodium carbonate After filtration and vacuum distillation at 144-147° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Chloroacetaldehyde dimethyl acetal (50.0 g), potassium benzoate (70.7 g), potassium iodide (6.66 g) and DMF (N,N-dimethylformamide) (250 mL) were placed in a three-neck flask, followed by refluxing. Twenty hours later, the reaction mixture was cooled to room temperature, and water (250 mL) and ethyl acetate (250 mL) were added thereto, followed by stirring. After filtration, the filtrate was extracted with ethyl acetate (500 mL). The organic layer was subjected to vacuum concentration and then to vacuum distillation at 132-135° C. and at 5 mmHg and thereby yielded the target compound (61.0 g) in a yield of 72%. by refluxing After filtration the filtrate was extracted with ethyl acetate (500 mL) The organic layer was subjected to vacuum concentration to vacuum distillation at 132-135° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Aliquots of 2-benzoyloxyacetaldehyde dimethyl acetal (50.0 g) prepared according to Example 1,2-mercaptoethanol (20.4 g), p-toluenesulfonic acid monohydrate (0.90 g) and toluene (250 mL) were placed in a three-neck flask, followed by heating. By-produced methanol was distilled off with the solvent. After distilling off about 150 mL, the reaction mixture was cooled to room temperature, was washed with a saturated aqueous sodium hydrogen carbonate solution and water and was dried over anhydrous sodium carbonate. After filtration and vacuum distillation at 144-147° C. and at 0.60 mmHg, the target compound (54.9 g) was obtained in a yield of 100%. were placed in a three-neck flask by heating By-produced methanol was distilled off with the solvent After distilling off about 150 mL was washed with a saturated aqueous sodium hydrogen carbonate solution and water was dried over anhydrous sodium carbonate After filtration and vacuum distillation at 144-147° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Chloroacetaldehyde dimethyl acetal (50.0 g), potassium benzoate (70.7 g), potassium iodide (6.66 g) and DMF (N,N-dimethylformamide) (250 mL) were placed in a three-neck flask, followed by refluxing. Twenty hours later, the reaction mixture was cooled to room temperature, and water (250 mL) and ethyl acetate (250 mL) were added thereto, followed by stirring. After filtration, the filtrate was extracted with ethyl acetate (500 mL). The organic layer was subjected to vacuum concentration and then to vacuum distillation at 132-135° C. and at 5 mmHg and thereby yielded the target compound (61.0 g) in a yield of 72%. by refluxing After filtration the filtrate was extracted with ethyl acetate (500 mL) The organic layer was subjected to vacuum concentration to vacuum distillation at 132-135° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Aliquots of 2-benzoyloxyacetaldehyde dimethyl acetal (50.0 g) prepared according to Example 1,2-mercaptoethanol (20.4 g), p-toluenesulfonic acid monohydrate (0.90 g) and toluene (250 mL) were placed in a three-neck flask, followed by heating. By-produced methanol was distilled off with the solvent. After distilling off about 150 mL, the reaction mixture was cooled to room temperature, was washed with a saturated aqueous sodium hydrogen carbonate solution and water and was dried over anhydrous sodium carbonate. After filtration and vacuum distillation at 144-147° C. and at 0.60 mmHg, the target compound (54.9 g) was obtained in a yield of 100%. were placed in a three-neck flask by heating By-produced methanol was distilled off with the solvent After distilling off about 150 mL was washed with a saturated aqueous sodium hydrogen carbonate solution and water was dried over anhydrous sodium carbonate After filtration and vacuum distillation at 144-147° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Chloroacetaldehyde dimethyl acetal (50.0 g), potassium benzoate (70.7 g), potassium iodide (6.66 g) and DMF (N,N-dimethylformamide) (250 mL) were placed in a three-neck flask, followed by refluxing. Twenty hours later, the reaction mixture was cooled to room temperature, and water (250 mL) and ethyl acetate (250 mL) were added thereto, followed by stirring. After filtration, the filtrate was extracted with ethyl acetate (500 mL). The organic layer was subjected to vacuum concentration and then to vacuum distillation at 132-135° C. and at 5 mmHg and thereby yielded the target compound (61.0 g) in a yield of 72%. by refluxing After filtration the filtrate was extracted with ethyl acetate (500 mL) The organic layer was subjected to vacuum concentration to vacuum distillation at 132-135° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Aliquots of 2-benzoyloxyacetaldehyde dimethyl acetal (50.0 g) prepared according to Example 1, 2-mercaptoethanol (20.4 g), p-toluenesulfonic acid monohydrate (0.90 g) and toluene (250 mL) were placed in a three-neck flask, followed by heating. By-produced methanol was distilled off with the solvent. After distilling off about 150 mL, the reaction mixture was cooled to room temperature, was washed with a saturated aqueous sodium hydrogen carbonate solution and water and was dried over anhydrous sodium carbonate. After filtration and vacuum distillation at 144-147° C. and at 0.60 mmHg, the target compound (54.9 g) was obtained in a yield of 100%. were placed in a three-neck flask by heating By-produced methanol was distilled off with the solvent After distilling off about 150 mL was washed with a saturated aqueous sodium hydrogen carbonate solution and water was dried over anhydrous sodium carbonate After filtration and vacuum distillation at 144-147° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Chloroacetaldehyde dimethyl acetal (50.0 g), potassium benzoate (70.7 g), potassium iodide (6.66 g) and DMF (N,N-dimethylformamide) (250 mL) were placed in a three-neck flask, followed by refluxing. Twenty hours later, the reaction mixture was cooled to room temperature, and water (250 mL) and ethyl acetate (250 mL) were added thereto, followed by stirring. After filtration, the filtrate was extracted with ethyl acetate (500 mL). The organic layer was subjected to vacuum concentration and then to vacuum distillation at 132-135° C. and at 5 mmHg and thereby yielded the target compound (61.0 g) in a yield of 72%. by refluxing After filtration the filtrate was extracted with ethyl acetate (500 mL) The organic layer was subjected to vacuum concentration to vacuum distillation at 132-135° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Aliquots of 2-benzoyloxyacetaldehyde dimethyl acetal (50.0 g) prepared according to Example 1,2-mercaptoethanol (20.4 g), p-toluenesulfonic acid monohydrate (0.90 g) and toluene (250 mL) were placed in a three-neck flask, followed by heating. By-produced methanol was distilled off with the solvent. After distilling off about 150 mL, the reaction mixture was cooled to room temperature, was washed with a saturated aqueous sodium hydrogen carbonate solution and water and was dried over anhydrous sodium carbonate. After filtration and vacuum distillation at 144-147° C. and at 0.60 mmHg, the target compound (54.9 g) was obtained in a yield of 100%. were placed in a three-neck flask by heating By-produced methanol was distilled off with the solvent After distilling off about 150 mL was washed with a saturated aqueous sodium hydrogen carbonate solution and water was dried over anhydrous sodium carbonate After filtration and vacuum distillation at 144-147° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Chloroacetaldehyde dimethyl acetal (50.0 g), potassium benzoate (70.7 g), potassium iodide (6.66 g) and DMF (N,N-dimethylformamide) (250 mL) were placed in a three-neck flask, followed by refluxing. Twenty hours later, the reaction mixture was cooled to room temperature, and water (250 mL) and ethyl acetate (250 mL) were added thereto, followed by stirring. After filtration, the filtrate was extracted with ethyl acetate (500 mL). The organic layer was subjected to vacuum concentration and then to vacuum distillation at 132-135° C. and at 5 mmHg and thereby yielded the target compound (61.0 g) in a yield of 72%. by refluxing After filtration the filtrate was extracted with ethyl acetate (500 mL) The organic layer was subjected to vacuum concentration to vacuum distillation at 132-135° C.