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The invention relates to a low-cost to that of amine green production method. The method utilizes 3 – amino piperidine – 2, 6 – dione and 1 – halogenated acetoacetate in the presence of a solvent and alkali, dehydrogenated hypohalous acid condensation, dealcoholization amide and 2 – halo – 4 – nitro-butyraldehyde dehydration, dehydrochlorination or hydrogen bromide to obtain 3 – (7 – nitro – 3 – oxo – 1 H – isoindole – 2 – yl) piperidine – 2, 6 – dione, more than “one-pot” process is completed, then the resulting 3 – (7 – nitro – 3 – oxo – 1 H – isoindole – 2 – yl) piperidine – 2, 6 – two alkone pass through catalytic hydrogenation reduction of nitro to amino, preparation to that amine. The method of easily obtained raw material, the process flow is short, simple and convenient operation, green environmental protection, which is beneficial to the industrial generation method. (by machine translation)
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Reference：
Piperidine – Wikipedia,
Piperidine | C5H22779N – PubChem