15846-25-0Relevant articles and documents
Synthesis and Characterization of New Boron Compounds Using Reaction of Diazonium Tetraphenylborate with Enaminoamides
Bertolasi, Valerio,Li, Bing-Han,Marek, Luká?,Sedlák, Milo?,Socha, Lubo?,Svoboda, Jan,Svobodová, Markéta
supporting information, (2022/01/11)
A family of oxazaborines, diazaborinones, triazaborines, and triazaborinones was prepared by reaction of polarized ethylenes, such as β-enaminoamides, with 4-methylbenzenediazo-nium tetraphenylborates. The reaction conditions (stirring in CH2Cl2 at room temperature (Method A) or stirring with CH3COONa in CH2Cl2 at room temperature (Method B) or refluxing in the CH2Cl2/toluene mixture (Method C)) controlled the formation and relative content of these compounds in the reaction mixtures from one to three products. Substituted oxazaborines gradually rearranged into diazaborinones at 250 °C. The prepared compounds were characterized by1H NMR,13C NMR, IR, and UV–Vis spectroscopy, HRMS, or microanalysis. The structure of individual compounds was confirmed by11B NMR,15N NMR, 1D NOESY, and X-ray analysis. The mechanism of reaction of enaminoamides with 4-methylbenzenediazonium tetraphenylborate was proposed.
Preparation method of 3-aminobutyramide type compound
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Paragraph 0025; 0026; 0028, (2018/01/12)
The invention discloses a preparation method of a 3-aminobutyramide type compound. The preparation method includes the following steps: 1) performing a reaction to a compound (I) as a raw material in ammonia water at 20-70 DEG C to produce a compound (II) after the reaction is completed; 2) adding the compound (II) to a solvent, and performing a reductive hydrogenation reaction at 30-50 DEG C under 0.1-1.5 MPa to produce a compound (III), Raney nickel being a catalyst. The preparation method is simple in processes and has gentle conditions and is composed of common ammonolysis reaction and hydrogenation reduction reaction (ammonolysis reactions in the prior art require high-pressure equipment and are high in energy consumption), wherein an ammonolysis mother liquid can be directly recycled, so that the preparation method has simple operations. The product is high in yield and purity, wherein total yield is more than 77% and purity is more than 98%. The method is suitable for industrial production of the 3-aminobutyramide type compound and is environment-friendly.