Cl[CH2:2][CH2:3][N:4]([CH2:13][CH3:14])[C:5]1[CH:12]=[CH:11][C:8]([CH:9]=[O:10])=[CH:7][CH:6]=1.[OH:15][C:16]1[CH:23]=[CH:22][C:19]([CH:20]=[O:21])=[CH:18][CH:17]=1.[OH-].[Na+].C(OCCOCCO)C>O>[CH:20]([C:19]1[CH:22]=[CH:23][C:16]([O:15][CH2:2][CH2:3][N:4]([CH2:13][CH3:14])[C:5]2[CH:12]=[CH:11][C:8]([CH:9]=[O:10])=[CH:7][CH:6]=2)=[CH:17][CH:18]=1)=[O:21]A mixture of 4-[[2-Chloroethyl)ethylamino]benzaldehyde 10.6 g (0.05 m), p-hydroxybenzaldehyde (6.1 g, 0.05 m), 50% NaOH (4.4 g), water (50 mL), and 2-(2-ethoxyethoxy)ethanol was heated at reflux for 6 hours and then allowed to cool. A semi-solid product was obtained which was washed with water by decantation and recrystallized from methanol. After being collected by filtration, washed with methanol, and dried in air the product weighed 6.5 g and the structure was confirmed by mass spectral analysis to be as follows: ##STR14##
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