FIELD: chemistry.
SUBSTANCE: method consists in the reduction of aromatic nitro compounds in supercritical isopropyl alcohol as a solvent at a temperature of 270-330°C and pressure of P = 180-200 atm. A feature of the proposed method is the reduction reaction of aromatic nitro compounds in the presence of a heterogeneous zirconia catalyst ZrO2 or titanium dioxide TiO2. Preferably, the process is to be carried out in a flow tube type reactor. As a supercritical solvent, isopropyl alcohol can be used with the addition of supercritical CO2. The method allows to simplify the process by eliminating explosive molecular hydrogen, significantly shortening the process time by increasing the reaction rate, and avoiding the formation of decomposition products.
EFFECT: method allows to control the selectivity of target product formation.
5 tbl, 5 ex
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