627-45-2Relevant articles and documents
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Cairns et al.
, p. 1497,1676 (1952)
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Synthetic method of N-mono-substituted alkyl formamide
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Paragraph 0024; 0025; 0026; 0027-0043; 0064; 0065, (2019/10/01)
The embodiment of the invention discloses a synthetic method of N-mono-substituted alkyl formamide. The synthetic method comprises the steps of enabling primary amine compounds to react with carbon monoxide, distilling, and rectifying to obtain the N-mono-substituted alkyl formamide under the catalytic action of a sodium alkoxide-alcohol solution, wherein the molar ratio of the primary amine compounds to the sodium alkoxide-alcohol solution is 1 to (0.002 to 0.008); according to the synthetic method disclosed by the invention, through selecting specific materials, the N-mono-substituted alkylformamide can be synthesized through a one-step method under the action of a specific catalyst, and the synthetic method has the advantages that the process is simple, no by-product is produced, the source of raw materials are rich, the cost is low, the production efficiency can be improved effectively, and the production cost can be reduced; in addition, the yield and purity of synthetic productscan also be improved.
Organocatalytic Decarboxylation of Amino Acids as a Route to Bio-based Amines and Amides
Claes, Laurens,Janssen, Michiel,De Vos, Dirk E.
, p. 4297 - 4306 (2019/08/26)
Amino acids obtained by fermentation or recovered from protein waste hydrolysates represent an excellent renewable resource for the production of bio-based chemicals. In an attempt to recycle both carbon and nitrogen, we report here on a chemocatalytic, metal-free approach for decarboxylation of amino acids, thereby providing a direct access to primary amines. In the presence of a carbonyl compound the amino acid is temporarily trapped into a Schiff base, from which the elimination of CO2 may proceed more easily. After evaluating different types of aldehydes and ketones on their activity at low catalyst loadings (≤5 mol%), isophorone was identified as powerful organocatalyst under mild conditions. After optimisation many amino acids with a neutral side chain were converted in 28–99 % yield in 2-propanol at 150 °C. When the reaction is performed in DMF, the amine is susceptible to N-formylation. This consecutive reaction is catalysed by the acidity of the amino acid reactant itself. In this way, many amino acids were efficiently transformed to the corresponding formamides in a one-pot catalytic system.
Conversion of nitroalkanes into carboxylic acids via iodide catalysis in water
Marcé, Patricia,Lynch, James,Blacker, A. John,Williams, Jonathan M. J.
supporting information, p. 1013 - 1016 (2016/01/16)
We report a new method for the conversion of nitroalkanes into carboxylic acids that achieves this transformation under very mild conditions. Catalytic amounts of iodide in combination with a simple zinc catalyst are needed to give good conversions into the corresponding carboxylic acids.