6945-92-2Relevant articles and documents
Synthesis method of ethyl hydrazino-acetate hydrochloride
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Paragraph 0016; 0018-0020, (2020/03/09)
The invention discloses a synthesis method of ethyl hydrazino-acetate hydrochloride. The synthesis method comprises following steps: step one, in a pressure vessel, taking ethyl glyoxalate as the primary raw material, and carrying out reactions between ethyl glyoxalate and hydrazine hydrate in a solvent for 30 minutes to 5 hours to prepare ethyl hydrazo-acetate; step two, after reactions of the step one, adding a catalyst into the reaction solution, carrying out reactions for 0.5 to 24 hours at a reaction temperature of 20 to 100 DEG C to obtain ethyl hydrazino-acetate; and step three, carrying out salt forming reactions to obtain the target product namely ethyl hydrazino-acetate hydrochloride. The used reagents and solvents all meet the common industrial standards. The synthesis method issuitable for industrial large-scale production, generates little environmental pollution, and does not generate a large amount of wastewater, waste solids, and waste gas, furthermore, the operation is very safe, the post treatment is simple and easy to perform, the yield is high, and the cost is low. Reactions of two steps are carried out in one pot, and the production becomes easy.
Preparation method of ethyl hydrazinoacetate hydrochloride
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Paragraph 0014; 0016; 0018; 0020; 0022; 0024, (2019/01/16)
The invention discloses a preparation method of ethyl hydrazinoacetate hydrochloride, which belongs to the technical field of organic synthesis. The preparation method is characterized by comprisingthe following steps: using ethyl chloroacetate or ethyl bromoacetate as an initial material to react with tert-Butyl carbazate, generating a tertiary butyl protective group, removing the protection, forming hydrochloric salt, and thus obtaining ethyl hydrazinoacetate hydrochloride. The preparation method has the advantages of mild reaction condition, high yield, high purity, low cost, economy, environmental protection, applicability to industrialization and the like, and is a synthetic method with industrial production value.