Benzyl Bromide → 3-{4-[2-(1-Benzyl-3-methyl-2-oxo-imidazolidin-4-yl)-ethoxy]-phenyl}-2-butoxy-2-methyl-propionic acid ethyl ester

Beteiligte Stoffe

Reaktionsschritte

Benzyl bromide (0.0.21 mL, 0.174 mmol, d=1.438) and tetrabutyl ammonium iodide (catalytic amount) are added to a 0° C. suspension of 2-butoxy-2-methyl-3-{4-[2-(3-methyl-2-oxo-imidazolidin-4-yl)-ethoxy]-phenyl}-propionic acid ethyl ester (0.047 g, 0.116 mmol) and sodium hydride (0.012 g, 0.29 mmol, 60% suspension on mineral oil), pre-stirred for 1 h at ambient temperature. The reaction mixture is stirred at ambient temperature for 48 h, diluted with ethyl acetate, and washed with 1N HCl and water. The organic layer is dried, concentrated, and used in the next step. MS [EI+] 497 (M+H)+.

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