[CH3:1][O:2][CH:3]([C:12]1[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][CH:13]=1)[CH2:4][CH:5]=[CH:6][CH:7]=[CH:8][C:9](Cl)=[O:10].[C:20]1([NH2:27])[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=1[NH2:26].CN1CCOCC1>C(Cl)Cl>[NH2:26][C:21]1[CH:22]=[CH:23][CH:24]=[CH:25][C:20]=1[NH:27][C:9](=[O:10])[CH:8]=[CH:7][CH:6]=[CH:5][CH2:4][CH:3]([O:2][CH3:1])[C:12]1[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][CH:13]=1To a stirred solution of acid chloride 5 (115 mg,0.41 mmol) in CH2Cl2 (5 mL) at 0° C. was added 1,2-phenylenediamine (133 mg,1.23 mmol) followed by N-methylmorpholine (49 μL, 0.45 mmol). The mixture was stirred at 0° C. for 1 h, and then was allowed to warm to rt over 1 h. After being stirred for an additional 1 h at rt, the reaction mixture was partitioned between CHCl3 (2×15 mL) and water (15 mL). The combined organic layers were dried (MgSO4) and concentrated under reduced pressure to give the crude product. Purification by flash silica gel chromatography (50% ethyl acetate in hexane) afforded the desired benzamide 18 (21 mg, 15% yield): 1H NMR (300 MHz, CDCl3) δ 6.65-7.40 (m, 9H), 5.96-6.20 (m, 2H), 5.92 (d, J=15.3 Hz, 1H), 4.18 (m, 1H), 3.82 (br s, 2H), 3.81 (s, 3H ), 3.19 (s, 3H), 2.61 (m, 1H), 2.43 (m, 1H); 13CNMR (75.4 MHz,CDCl3) δ 41.7, 55.2, 56.4, 82.7, 113.8, 118.2, 119.5, 121.8, 124.4, 125.0, 127.0, 127.8, 130.1, 133.1, 139.5, 140.7, 142.4, 159.2, 164.6.
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