[OH:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]2[CH:10]=[C:11]3[C:16](=[CH:17][CH:18]=2)[CH:15]=[C:14]([OH:19])[CH:13]=[CH:12]3)=[CH:4][CH:3]=1.CN(C)C1C=CC=CC=1.[C:29](Cl)(=[O:31])[CH3:30].Cl>C(Cl)Cl.C1COCC1>[OH:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]([C:9]2[CH:18]=[CH:17][C:16]3[C:11](=[CH:12][CH:13]=[C:14]([OH:19])[CH:15]=3)[CH:10]=2)[C:29](=[O:31])[CH3:30])=[CH:4][CH:3]=1A solution of 830 mg (3.30 mmol of 6-[(4-hydroxyphenyl)amino]-2-naphthalenol (prepared as described in Example 3) and 840 ul (6.60 mmol, 2 eq.) of dimethylaniline in 15 ml of dry CH2Cl2 and 5 ml of dry THF was stirred at 0° C., then 415 ul (5.80 mmol, Mallinckrodt) of acetyl chloride was added dropwise. After 50 minutes, 1N aqueous HCl was added and this was extracted with EtOAc. The organic layers were washed with 1N aqueous HCl, dried (MgSO4) and concentrated in vacuo. The aqueous layers were extracted with hot EtOAc and the organic layers were combined, dried (MgSO4) and concentrated in vacuo. Purification of all the organic phases was accomplished via flash chromatography (1:2, 1:1 EtOAc/petroleum ether) and recrystallization (aqueous MeOH) afforded 97 mg (10%) of title compound as pale orange crystals: m.p. 255° C.
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