反应详情

Analogously to Example (2b), a mixture of 19.2 g (68 mmol) of p-[2-(tertiary butoxycarbonylamino)-2-methylpropoxy]-phenol, 47 g (340 mmol) of potassium carbonate and 1.5 g of triethylbenzylammonium chloride is reacted in 57 ml (680 mmol) of 1,2-dibromoethane and worked up. Crude 1-(2-bromoethoxy)-4-[2-(tertiary butoxycarbonylamino)-2-methylpropoxy]-benzene is obtained in the form of an oil, which is used further in crude form.