5-Isopropylhydantoin

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 995.0 g of 5-isopropylhydantoin (7 mols), 2000 ml of dimethylformamide and 14.8 g of lithium chloride is stirred at 50° C. 1220 g of propene oxide (21 mols) are slowly added dropwise over the course of 6 hours. Thereafter the temperature is gradually raised at 70° C. and after a total of 15 hours the reaction mixture is allowed to cool. It is adjusted to pH = 7 with a few drops of 2 N H2SO4 and the pale yellow solution is filtered. The solution is completely concentrated at 90° C. bath temperature on a rotational evaporator under a waterpump vacuum and is subsequently treated at 90° C./0.1 mm Hg until constant weight is reached. 1654.5 g of a pale yellow highly viscous product (91.7% of theory) are obtained. Thereafter the temperature is gradually raised at 70° C. after a total of 15 hours to cool the pale yellow solution is filtered The solution is completely concentrated at 90° C. bath temperature on a rotational evaporator under a waterpump vacuum is subsequently treated at 90° C./0.1 mm Hg until constant weight 1654.5 g of a pale yellow highly viscous product (91.7% of theory) are obtained

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 995.0 g of 5-isopropylhydantoin (7 mols), 2000 ml of dimethylformamide and 14.8 g of lithium chloride is stirred at 50° C. 1220 g of propene oxide (21 mols) are slowly added dropwise over the course of 6 hours. Thereafter the temperature is gradually raised at 70° C. and after a total of 15 hours the reaction mixture is allowed to cool. It is adjusted to pH = 7 with a few drops of 2 N H2SO4 and the pale yellow solution is filtered. The solution is completely concentrated at 90° C. bath temperature on a rotational evaporator under a waterpump vacuum and is subsequently treated at 90° C./0.1 mm Hg until constant weight is reached. 1654.5 g of a pale yellow highly viscous product (91.7% of theory) are obtained. Thereafter the temperature is gradually raised at 70° C. after a total of 15 hours to cool the pale yellow solution is filtered The solution is completely concentrated at 90° C. bath temperature on a rotational evaporator under a waterpump vacuum is subsequently treated at 90° C./0.1 mm Hg until constant weight 1654.5 g of a pale yellow highly viscous product (91.7% of theory) are obtained

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 995.0 g of 5-isopropylhydantoin (7 mols), 2000 ml of dimethylformamide and 14.8 g of lithium chloride is stirred at 50° C. 1220 g of propene oxide (21 mols) are slowly added dropwise over the course of 6 hours. Thereafter the temperature is gradually raised to 70° C. and after a total of 15 hours the reaction mixture is allowed to cool. It is adjusted to pH=7 with a few drops of 2 N H2SO4 and the pale yellow solution is filtered. The solution is completely concentrated at 90° C. bath temperature on a rotational evaporator under a waterpump vacuum and is subsequently treated at 90° C./0.1 mm Hg until constant weight is reached. 1654.5 g of a pale yellow highly viscous product (91.7% of theory) are obtained. Thereafter the temperature is gradually raised to 70° C. after a total of 15 hours to cool the pale yellow solution is filtered The solution is completely concentrated at 90° C. bath temperature on a rotational evaporator under a waterpump vacuum is subsequently treated at 90° C./0.1 mm Hg until constant weight 1654.5 g of a pale yellow highly viscous product (91.7% of theory) are obtained

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

Procedure: 5-(1H-indol-2-ylmethyl)-2,4-imidazolidinedione; 5,5-diphenyl-2,4-imidazolidinedione; 3-butyl-5-methyl-2,4-imidazolidinedione; 3-butyl-5-(phenylmethyl)-2,4-imidazolidinedione; 3-butyl-2,4-imidazolidinedione,

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

Procedure: 5-(1H-indol-2-ylmethyl)-2,4-imidazolidinedione; 5,5-diphenyl-2,4-imidazolidinedione; 3-butyl-5-methyl-2,4-imidazolidinedione; 3-butyl-5-(phenylmethyl)-2,4-imidazolidinedione; 3-butyl-2,4-imidazolidinedione,

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

Procedure: Using 5-isopropylimidazolidine-2,4-dione (1.00 g) and methyl iodide (0.46 mL) and by the reaction and treatment in the same manner as in Preparation Example 214, the title compound (0.88 g) was obtained. by the reaction and treatment in the same manner as in Preparation Example 214

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

Procedure: Using 5-isopropylimidazolidine-2,4-dione (2.00 g) and 4-methoxybenzyl chloride (2.29 mL) and by the reaction and treatment in the same manner as in Preparation Example 51, the title compound (2.72 g) was obtained. by the reaction and treatment in the same manner as in Preparation Example 51

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 995.0 g of 5-isopropylhydantoin (7 mols), 2000 ml of dimethylformamide and 14.8 g of lithium chloride is stirred at 50° C. 1220 g of propene oxide (21 mols) are slowly added dropwise over the course of 6 hours. Thereafter the temperature is gradually raised at 70° C. and after a total of 15 hours the reaction mixture is allowed to cool. It is adjusted to pH = 7 with a few drops of 2 N H2SO4 and the pale yellow solution is filtered. The solution is completely concentrated at 90° C. bath temperature on a rotational evaporator under a waterpump vacuum and is subsequently treated at 90° C./0.1 mm Hg until constant weight is reached. 1654.5 g of a pale yellow highly viscous product (91.7% of theory) are obtained. Thereafter the temperature is gradually raised at 70° C. after a total of 15 hours to cool the pale yellow solution is filtered The solution is completely concentrated at 90° C. bath temperature on a rotational evaporator under a waterpump vacuum is subsequently treated at 90° C./0.1 mm Hg until constant weight 1654.5 g of a pale yellow highly viscous product (91.7% of theory) are obtained

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 995.0 g of 5-isopropylhydantoin (7 mols), 2000 ml of dimethylformamide and 14.8 g of lithium chloride is stirred at 50° C. 1220 g of propene oxide (21 mols) are slowly added dropwise over the course of 6 hours. Thereafter the temperature is gradually raised to 70° C. and after a total of 15 hours the reaction mixture is allowed to cool. It is adjusted to pH=7 with a few drops of 2 N H2SO4 and the pale yellow solution is filtered. The solution is completely concentrated at 90° C. bath temperature on a rotational evaporator under a waterpump vacuum and is subsequently treated at 90° C./0.1 mm Hg until constant weight is reached. 1654.5 g of a pale yellow highly viscous product (91.7% of theory) are obtained. Thereafter the temperature is gradually raised to 70° C. after a total of 15 hours to cool the pale yellow solution is filtered The solution is completely concentrated at 90° C. bath temperature on a rotational evaporator under a waterpump vacuum is subsequently treated at 90° C./0.1 mm Hg until constant weight 1654.5 g of a pale yellow highly viscous product (91.7% of theory) are obtained

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

Procedure: 5-(1H-indol-2-ylmethyl)-2,4-imidazolidinedione; 5,5-diphenyl-2,4-imidazolidinedione; 3-butyl-5-methyl-2,4-imidazolidinedione; 3-butyl-5-(phenylmethyl)-2,4-imidazolidinedione; 3-butyl-2,4-imidazolidinedione,