Methyl iodide → HCID 59742753, compound

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Reaction Steps

To a stirred solution of 2-(tert-butyl-dimethyl-silanyl)-4-(1-hydroxy-2-phenyl-ethyl)-imidazole-1-sulfonic acid dimethylamide (160 mg) at r.t. in THF (5 ml) under an argon atmosphere was added NaH (18 mg; 55% dispersion in mineral oil) in one portion. After 1 hour stirring at r.t., MeI (0.04 ml) was added and stirring at r.t. was continued overnight. The mixture was diluted with EtOAc and washed with H2O. The aqueous phase was back extracted with EtOAc. The combined organics were washed with H2O and brine, dried over MgSO4, filtered and concentrated. The crude product was purified by column chromatography (silica gel; gradient: cyclohexane→cyclohexane/EtOAc 65:35) to give 2-(tert-butyl-dimethyl-silanyl)-4-(1-methoxy-2-phenyl-ethyl)-imidazole-1-sulfonic acid dimethylamide (111 mg) as light yellow viscous oil. MS (ISP): 424.3 ([M+H]+)

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