Method for preparing m-nitroaniline by m-dinitrobenzene selectivity reduction
A technology for m-dinitrobenzene and nitroaniline, which is applied in the preparation of amino compounds, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of pollution selectivity, difficulty in control, etc., and achieves high reduction reaction yield, Low cost and the effect of avoiding pollution problems
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Embodiment 1
[0013] In a 75mL stainless steel autoclave, add 0.42g of m-dinitrobenzene, 0.42g of iron powder, 11.1mL of water, 1.4mL of ethanol, magnets, tighten the autoclave, and use CO 2 Replace the air 5 times, fill it with 2.8MPa carbon dioxide, put it into an 80°C oil bath, start stirring, react for 6 hours to stop the reaction, cool down, release carbon dioxide, extract the product in the kettle with ethyl acetate, analyze the product components by TLC, and use gas phase The content of each component is analyzed by chromatography, and the results show that the conversion rate of m-dinitrobenzene is more than 99%, and the selectivity of m-nitroaniline is more than 99%.
Embodiment 2-10
[0014] Embodiment 2-10, concrete operating conditions see embodiment 1
[0015] implement
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