[H-].[Na+].CS(C)=O.[I-].[CH3:8][S+](C)C.[Cl:12][C:13]1[CH:18]=[CH:17][C:16]([C:19]([C:21]2[CH:26]=[CH:25][C:24]([I:27])=[CH:23][CH:22]=2)=[O:20])=[CH:15][CH:14]=1>C(OCC)(=O)C>[Cl:12][C:13]1[CH:18]=[CH:17][C:16]([C:19]2([C:21]3[CH:26]=[CH:25][C:24]([I:27])=[CH:23][CH:22]=3)[CH2:8][O:20]2)=[CH:15][CH:14]=1Sodium hydride (60% dispersion in oil, 128 mg, 3.2 mmol) was placed under N2 then DMSO (5 mL) was added. Trimethylsulfonium iodide (0.66 g, 3.2 mmol) was added as a solid after 15 min, followed after a further 30 min by (4-chloro-phenyl)-(4-iodo-phenyl)-methanone. The mixture was stirred at room temperature for 24 hours then diluted with ethyl acetate and washed with 1:2 water/brine, water and brine (×2). The organic phase was dried (MgSO4), filtered and concentrated to give the title compound (1.01 g, 97%), which was used without further purification. LCMS (PS-A2) Rt 4.07 min [M−H]+ 355.
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