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Description for route of synthesis:
Using anhydrous ethanol as the solvent, 1,2-methylenedioxy-4-nitrobenzene, hexahydrate nickel chloride, and 1,2-bis (diphenylphosphine) ethane were mixed, and borane ammonia complex was added as the reducing agent to carry out selective reduction reaction of nitro group at controlled temperature; After the reaction is complete, it is quenched, filtered, extracted, washed, dried, and then purified by recrystallization or column chromatography to obtain the target product 3,4-methylenedioxyaniline.
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