反应详情

A solution of 22 g of crude 1-[N-benzyl-N-[2-(5-carbamoyl-2-pyridyloxy)-1,1-dimethyl-ethyl]-amino]-3-(2-methyl-phenoxy)-2-propanol in 220 ml of methanol is hydrogenated analogously to Example 1, a total of 6 g of palladium-on-charcoal catalyst (5% strength) being added in 2 portions in order that the calculated amount of hydrogen should be taken up. Working up gives an oil from which 1-[2-(5-carbamoyl-2-pyridyloxy)-1,1-dimethyl-ethylamino]-3-(2-methyl-phenoxy)-2-propanol of melting point 122°-128° C. is obtained by crystallisation from ethyl acetate.