反应详情

A solution consisting of 12 g. of 1-(3-nitrophenoxy)-3-[2-(4-carbamoylphenoxy)ethylamino]propan-2-ol (m.p. 127°-129°C.) dissolved in 1000 ml. of methanol was subjected to catalytic hydrogenation over 0.3 g. of platinum oxide at room temperature (~25°C.) and 50 p.s.i. pressure of hydrogen [the 3-nitro starting material was prepared according to the procedure of Example VII from 1-(3-nitrophenoxy)-2,3-epoxypropane and 2-(4-carbamoylphenoxy)ethylamine]. Upon completion of this step, the resultant mixture was filtered and the clear filtrate thereafter evaporated to dryness while under reduced pressure to afford a white residual solid. Recrystallization of the latter material from methanol then gave pure 1-(3-aminophenoxy)-3-[2-(4-carbamoylphenoxy)ethylamino]propan-2-ol, m.p. 149°-157°C.

1. customat room temperature
2. custom(~25°C.) and 50 p.s.i
3. filtrationUpon completion of this step, the resultant mixture was filtered
4. customthe clear filtrate thereafter evaporated to dryness while under reduced pressure
5. customto afford a white residual solid
6. customRecrystallization of the latter material from methanol