C([N:3]([CH2:6]C)[CH2:4][CH3:5])C.[OH:8][C:9]1[CH:25]=[CH:24][C:12]([C:13]([C:15]2[CH:20]=[CH:19][C:18]([N:21]([CH3:23])[CH3:22])=[CH:17][CH:16]=2)=[O:14])=[CH:11][CH:10]=1.[C:26](OCCN=C=O)(=[O:30])[C:27]([CH3:29])=[CH2:28].[O:37]1CCCC1>C1(C)C=CC=CC=1>[CH3:22][N:21]([CH3:23])[C:18]1[CH:19]=[CH:20][C:15]([C:13](=[O:14])[C:12]2[CH:24]=[CH:25][C:9]([O:8][C:6](=[O:37])[NH:3][CH2:4][CH2:5][C:26](=[O:30])[C:27]([CH3:29])=[CH2:28])=[CH:10][CH:11]=2)=[CH:16][CH:17]=10.35 g of triethylamine, dissolved in 13 ml of tetrahydrofuran, was added dropwise at from 15° to 20° C. to a solution of 11.6 g (50 millimoles) of 4-hydroxy-4'-dimethylaminobenzophenone and 8.6 g (55 millimoles) of isocyanatoethyl methacrylate in 50 ml of toluene. The temperature was found to increase slightly to about 30° C. After stirring had been carried out for 10 hours at room temperature, the precipitated crystals were filtered off under suction, washed with toluene and recrystallized from isopropanol.
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