[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:8][C:9]([CH3:14])([CH3:13])[C:10](Cl)=[O:11]>C1C=CC=CC=1>[C:2]1([NH:1][C:10](=[O:11])[C:9]([CH3:14])([CH3:13])[CH3:8])[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1The preparation of Example 1 was repeated with the changes that the starting reactants were aniline (24.18 g, 0.260 mole) and trimethylacetoyl chloride (15.06 g, 0.125 mole), the reaction was carried out in benzene and produced 13.24 g of crystals of the desired product (60% yield), mp 132°-132.5° C. Proton nuclear magnetic resonance (89.55 MHz) showed absorptions at 7.568-7.078 ppm (m, 5H; aryl H); 1.310 ppm (s, 9H; tert-butyl H).
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