826-36-8Relevant articles and documents
Preparation of triacetoneamine, an improved method
Wu, Anxin,Yang, Weidong,Pan, Xinfu
, p. 3565 - 3569 (1996)
A new method for the preparation of triacetoneamine has been developed, in which, p-nitrotoluene is used as a catalyst, the yield of triacetoneamine is up to 65%.
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Rozantsev,Ivanov
, (1971)
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HETEROGENEOUS CATALYZED PROCESS FOR THE PRODUCTION OF 2,2,6,6-TETRAMETHYL-4-PIPERIDONE
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Page/Page column 22, (2020/12/11)
The present invention relates to a process for the production of 2,2,6,6-tetramethyl-4-piperidone particularly comprising (i) providing a reactor containing a catalyst comprising a zeolitic material having a framework structure of FAU, wherein the zeolitic material comprises YO2 and X2O3 in its framework structure, wherein Y is a tetravalent element and X is a trivalent element, wherein the zeolitic material has an YO2 to X2O3 molar ratio of 16 to 175; (ii) preparing a reaction mixture comprising acetone and ammonia; (iii) contacting the catalyst in the reactor with the reaction mixture prepared in (ii) at a temperature in the range of from 40 to 250 °C for obtaining a reaction product comprising 2,2,6,6-tetramethyl-4-piperidone; wherein the mixture prepared in (ii) and contacted with the catalyst in (iii) contains less than 10 weight-% of water based on 100 weight-% of the reaction mixture.
Method for preparing intermediate 2,2,6,6-tetramethyl-4-piperidylamine
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Paragraph 0039; 0040; 0041; 00443;, (2019/12/25)
The invention relates to a method for preparing intermediate 2,2,6,6-tetramethyl-4-piperidylamine. The method is characterized by comprising the following steps: step 1), in the presence of a catalyst1, reacting acetone with ammonia gas to produce 2,2,6,6-tetramethyl-4-piperidinone and water; and step 2), in the presence of a catalyst 2, reacting the 2,2,6,6-tetramethyl-4-piperidinone with ammonia gas to produce 2,2,6,6-tetramethyl-4-piperidylimine and water, and reacting the 2,2,6,6-tetramethyl-4-piperidylimine with hydrogen gas to produce the 2,2,6,6-tetramethyl-4-piperidylamine, wherein the catalyst 1 is ammonium nitrate, and the catalyst 2 is a sodium hydroxyphenyl phosphate modified framework nickel catalyst. The method provided by the invention has the advantages of short synthetictime, a high conversion rate of the acetone and a high repeating utilization rate of the raw materials.