5,5-diethylhydantoin

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

实验步骤: A solution of 125.0 g of 5,5-diethylhydantoin (0.8 mol), 300.0 g of dimethylformamide and 2.00 g of lithium chloride is stirred at 52° C. 128 g of propene oxide (2.2 mols) are added dropwise over the course of 21/2 hours. Stirring is then continued for 5 hours at 85°-90° C. The reaction mixture is adjusted to pH = 7 with 2-3 drops of 25% strength sulphuric acid, and is filtered. The clear solution is concentrated on a rotational evaporator at 80° C. bath temperature, under a waterpump vacuum, and is subsequently treated under a high vacuum (0.2 mm Hg) at 80° C. until constant weight is reached. is filtered The clear solution is concentrated on a rotational evaporator at 80° C. bath temperature under a waterpump vacuum, and is subsequently treated under a high vacuum (0.2 mm Hg) at 80° C. until constant weight

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

实验步骤: A solution of 125.0 g of 5,5-diethylhydantoin (0.8 mol), 300.0 g of dimethylformamide and 2.00 g of lithium chloride is stirred at 52° C. 128.0 g of propene oxide (2.2 mols) are added dropwise over the course of 21/2 hours. Stirring is then continued for 5 hours at 85°-90° C. The reaction mixture is adjusted to pH=7 with 2-3 drops of 25% strength sulphuric acid, and is filtered. The clear solution is concentrated on a rotational evaporator at 80° C. bath temperature, under a waterpump vacuum, and is subsequently treated under a high vacuum (0.1 mm Hg) at 80° C. until constant weight is reached. is filtered The clear solution is concentrated on a rotational evaporator at 80° C. bath temperature under a waterpump vacuum, and is subsequently treated under a high vacuum (0.1 mm Hg) at 80° C. until constant weight

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

实验步骤: A solution of 125.0 g of 5,5-diethylhydantoin (0.8 mol), 300.0 g of dimethylformamide and 2.00 g of lithium chloride is stirred at 52° C. 128.0 g of propene oxide (2.2 mols) are added dropwise over the course of 21/2 hours. Stirring is then continued for 5 hours at 85°-90° C. The reaction mixture is adjusted to pH=7 with 2-3 drops of 25% strength sulphuric acid, and is filtered. The clear solution is concentrated on a rotational evaporator at 80° C. bath temperature, under a waterpump vacuum, and is subsequently treated under a high vacuum (0.1 mm Hg) at 80° C. until constant weight is reached. is filtered The clear solution is concentrated on a rotational evaporator at 80° C. bath temperature under a waterpump vacuum, and is subsequently treated under a high vacuum (0.1 mm Hg) at 80° C. until constant weight

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

实验步骤: A solution of 125.0 g of 5,5-diethylhydantoin (0.8 mol), 300.0 g of dimethylformamide and 2.00 g of lithium chloride is stirred at 52° C. 128 g of propene oxide (2.2 mols) are added dropwise over the course of 21/2 hours. Stirring is then continued for 5 hours at 85°-90° C. The reaction mixture is adjusted to pH = 7 with 2-3 drops of 25% strength sulphuric acid, and is filtered. The clear solution is concentrated on a rotational evaporator at 80° C. bath temperature, under a waterpump vacuum, and is subsequently treated under a high vacuum (0.2 mm Hg) at 80° C. until constant weight is reached. is filtered The clear solution is concentrated on a rotational evaporator at 80° C. bath temperature under a waterpump vacuum, and is subsequently treated under a high vacuum (0.2 mm Hg) at 80° C. until constant weight

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

实验步骤: A solution of 125.0 g of 5,5-diethylhydantoin (0.8 mol), 300.0 g of dimethylformamide and 2.00 g of lithium chloride is stirred at 52° C. 128.0 g of propene oxide (2.2 mols) are added dropwise over the course of 21/2 hours. Stirring is then continued for 5 hours at 85°-90° C. The reaction mixture is adjusted to pH=7 with 2-3 drops of 25% strength sulphuric acid, and is filtered. The clear solution is concentrated on a rotational evaporator at 80° C. bath temperature, under a waterpump vacuum, and is subsequently treated under a high vacuum (0.1 mm Hg) at 80° C. until constant weight is reached. is filtered The clear solution is concentrated on a rotational evaporator at 80° C. bath temperature under a waterpump vacuum, and is subsequently treated under a high vacuum (0.1 mm Hg) at 80° C. until constant weight