- Benzene second grade jing synthetic method (by machine translation)
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The invention provides a method for synthesis of benzene second grade jing, the method benzene ethanol and hydrazine as raw material, for sodium hexametaphosphate as catalyst, reaction at certain temperature synthetic benzene second grade jing. In the reaction process is maintained in excess of hydrazine hydrate, in order to make the phenethyl alcohol reaction is complete, at the same time, the reaction is generated in the water through the rectification device continuously separating out from the reaction system, shortens the reaction time, improves the reaction yield. The method of the invention the process is simple, the reaction yield is high, production cost is low, not acid-base neutralization reaction, does not produce organic salt-containing waste water, waste is discharged little, is an environment-friendly production process. (by machine translation)
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Paragraph 0008-0010
(2018/06/04)
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- Synthesis method of phenelzine
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The invention relates to a synthesis method of phenelzine. The method comprises the following steps of taking phenethyl alcohol and hydrazine hydrate as raw materials and HD-8 macroporous strongly acidic cation exchange resin as a catalyst, and reacting under certain temperature to synthesize the phenelzine. In a reaction process, the excessive amount of the hydrazine hydrate is kept and the phenethyl alcohol reacts completely; meanwhile, water generated in reaction is continuously separated out from a reaction system through a rectification device; the reaction time is shortened and the reaction efficiency is improved. The method provided by the invention has the advantages of simple technology, high reaction yield, low production cost, no acid-base neutralization reaction, no organic salt-containing wastewater in a reaction process and less waste emission and is a green and environment-friendly type production technology.
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Paragraph 0007; 0008; 0009; 0010
(2018/08/04)
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