[Br:1][C:2]1[CH:3]=[C:4]([CH:16]=[CH:17][C:18]=1[Cl:19])[C:5]([N:7]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1O)[CH3:8])=[O:6].[C:20]([O-:23])([O-])=O.[K+].[K+]>CN(C=O)C.C(OCC)(=O)C.O>[Br:1][C:2]1[CH:3]=[C:4]([CH:16]=[CH:17][C:18]=1[Cl:19])[C:5]([N:7]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[O:23][CH2:20][CH2:5][N:7]([CH3:9])[CH3:8])[CH3:8])=[O:6]
A mixture of 3-bromo-4-chloro-N-(2-hydroxy-phenyl)-N-methyl-benzamide (404 mg, 1.18 mmol, Step 3B), β-dimethylaminobromide hydrobromide (553 mg, 2.38 mmol) and K2CO3 (655 mg, 4.75 mmol) was heated in DMF (7 mL) at 80° C. for 14 hrs. The mixture was then diluted with ethyl acetate and water. The organic layer was separated and washed with water and brine, dried over Na2SO4, then purified by silica gel column chromatography eluting with DCM/MeOH (95/5 with gradient to 9/1) to yield 3-bromo-4-chloro-N-[2-(2-dimethylamino-ethoxy)-phenyl]-N-methyl-benzamide (97 mg). MS [M+H]+: 412.7; tR=2.24 min. (method 1)
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