Cl[C:2]1[CH:7]=[CH:6][C:5]([O:8][CH2:9][C:10]2[CH:15]=[CH:14][C:13]([O:16][CH3:17])=[CH:12][CH:11]=2)=[CH:4][C:3]=1[N+:18]([O-:20])=[O:19].[OH:21][C:22]1[CH:27]=[CH:26][C:25]([SH:28])=[CH:24][CH:23]=1.C(=O)([O-])[O-].[Cs+].[Cs+].Cl>CN(C)C=O>[CH3:17][O:16][C:13]1[CH:14]=[CH:15][C:10]([CH2:9][O:8][C:5]2[CH:6]=[CH:7][C:2]([S:28][C:25]3[CH:26]=[CH:27][C:22]([OH:21])=[CH:23][CH:24]=3)=[C:3]([N+:18]([O-:20])=[O:19])[CH:4]=2)=[CH:11][CH:12]=1A solution of the product of Example 10C (0.812 g, 2.76 mmol), 4-hydroxythiophenol (0.419, 3.32 mmol) and cesium carbonate (2.16 g, 6.64 mmol) in N,N-dimethylformamide (5 mL) was heated to 100° C. for 16 hours. After cooling to room temperature the mixture was poured into ice water (20 mL) and the resultant solution acidified with 1N aqueous hydrochloric acid. The solution was then extracted with ethyl acetate (3×10 mL), the combined extracts dried over magnesium sulfate, filtered and concentrated under vacuum to provide the title compound (1.06 g, 100%).
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