5-[(4-甲氧基苯基)亚甲基]咪唑烷-2,4-二酮

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

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

实验步骤: 5-(p-Methoxybenzylidene)-hydantoin was prepared in the same manner as in Example 4, except that 46.8 g (0.25 mol) of sodium L-glutamate.monohydrate and 68.1 g (0.50 mol) of p-methoxybenzaldehyde were used in lieu of glycine and p-hydroxybenzaldehyde, respectively. During the reaction, the pH of the reaction mixture was 9.9 to 9.7. During the reaction

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

实验步骤: A mixture of p-methoxybenzaldehyde (2.00 g., 14.7 mmoles) and hydantoin (1.47 g., 1 molar ratio) in water (12 ml) was heated to 70°; monoethanolamine (1.35 g., 1.5 molar ratio) was then added. The mixture was stirred magnetically and heated in an oil bath at 90°-92° for 4 hours. Usual workup furnished the title compound as a pale yellow solid (2.74 g.), m.p. 250°-252° . was heated to 70° heated in an oil bath at 90°-92° for 4 hours

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

实验步骤: A mixture of p-methoxybenzaldehyde (2.00 g., 14.7 mmoles) and hydantoin (1.47 g., 1 molar ratio) in water (12 ml) was heated to 70°; monoethanolamine (1.35 g., 1.5 molar ratio) was then added. The mixture was stirred magnetically and heated in an oil bath at 90°-92° for 4 hours. Usual workup furnished the title compound as a pale yellow solid (2.74 g.), m.p. 250°-252° . was heated to 70° heated in an oil bath at 90°-92° for 4 hours

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

实验步骤: A mixture of p-methoxybenzaldehyde (2.00 g., 14.7 mmoles) and hydantoin (1.47 g., 1 molar ratio) in water (12 ml) was heated to 70°; monoethanolamine (1.35 g., 1.5 molar ratio) was then added. The mixture was stirred magnetically and heated in an oil bath at 90°-92° for 4 hours. Usual workup furnished the title compound as a pale yellow solid (2.74 g.), m.p. 250°-252°. was heated to 70° heated in an oil bath at 90°-92° for 4 hours

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

实验步骤: A mixture of p-methoxybenzaldehyde (2.00 g., 14.7 mmoles) and hydantoin (1.47 g., 1 molar ratio) in water (12 ml) was heated to 70°; monoethanolamine (1.35 g., 1.5 molar ratio) was then added. The mixture was stirred magnetically and heated in an oil bath at 90°-92° for 4 hours. Usual workup furnished the title compound as a pale yellow solid (2.74 g.), m.p. 250°-252°. was heated to 70° heated in an oil bath at 90°-92° for 4 hours

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

实验步骤: A mixture of p-methoxybenzaldehyde (2.00 g., 14.7 mmoles) and hydantoin (1.47 g., 1 molar ratio) in water (12 ml) was heated to 70°; monoethanolamine (1.35 g., 1.5 molar ratio) was then added. The mixture was stirred magnetically and heated in an oil bath at 90°-92° for 4 hours. Usual workup furnished the title compound as a pale yellow solid (2.74 g.), m.p. 250°-252°. was heated to 70° heated in an oil bath at 90°-92° for 4 hours