Sodium Hydroxide → 4-{3-[3-[2-(1-Cyclohexenyl)ethyl]-4-oxo-2-thiazolidinyl]propyl}benzoic Acid

反応式

[C:1]1([CH2:7][CH2:8][N:9]2[C:13](=[O:14])[CH2:12][S:11][CH:10]2[CH2:15][CH2:16][CH2:17][C:18]2[CH:28]=[CH:27][C:21]([C:22]([O:24]CC)=[O:23])=[CH:20][CH:19]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH:2]=1.[OH-].[Na+]>CO.O>[C:1]1([CH2:7][CH2:8][N:9]2[C:13](=[O:14])[CH2:12][S:11][CH:10]2[CH2:15][CH2:16][CH2:17][C:18]2[CH:28]=[CH:27][C:21]([C:22]([OH:24])=[O:23])=[CH:20][CH:19]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH:2]=1

参加物

実験手順

A solution of ethyl 4-{3-[3-[2-(1-cyclohexenyl)ethyl]-4-oxo-2-thiazolidinyl]propyl}benzoate (Example 4, Step B) (4.0 g., 0.01 mole) and sodium hydroxide (1.2 g., 0.003 mole) in methanol (50 ml.) and water (5 ml.) is allowed to stand at 25° C. for 18 hours. The methanol is distilled at reduced pressure. The residual solution is treated with water (50 ml.) and acidified with 2 N hydrochloric acid. The title compound precipitates as an oil that gradually crystallizes. It is collected, washed with water, and air dried.