反应详情

温度

120 °C

38 g of 4-nitrostilbene are hydrogenated in 120 g of ethanol with 6 g of a CoSx paste prepared according to Example 1, which was digested with ethanol and contains approx. 30% of CoSx, in a stainless steel stirred autoclave at 115° C under 80 bars of H2. The calculated amount of hydrogen for the reduction of the nitro group has been take up within 1 hour. The mixture is stirred for a further 10 minutes at 120° C and 80 bars of H2. The reduction mixture is filtered and the resulting solution gives 30 g of 4-amino-trans-stilbene; melting point 151° C.

1. customprepared
2. customat 115° C
3. filtrationThe reduction mixture is filtered