1-Nitro-4-((E)-styryl)-benzene → 4-Aminostilbene
Reaction equation
[N+:1]([C:4]1[CH:9]=[CH:8][C:7]([CH:10]=[CH:11][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)=[CH:6][CH:5]=1)([O-])=O.[H][H]>C(O)C>[NH2:1][C:4]1[CH:5]=[CH:6][C:7](/[CH:10]=[CH:11]/[C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)=[CH:8][CH:9]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 120 °C
Procedure
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.