64450-25-5Relevant articles and documents
Biocatalytic Aza-Michael Addition of Aromatic Amines to Enone Using α-Amylase in Water
Dutt, Sunil,Goel, Vanshita,Garg, Neha,Choudhury, Diptiman,Mallick, Dibyendu,Tyagi, Vikas
supporting information, p. 858 - 866 (2020/01/03)
The Michael addition of amines with enones for synthesizing β-amino carbonyls constitutes a valuable transformation in organic chemistry. While various catalyst have been made available for catalyzing the Michael addition of aromatic amines to enones but
Method for catalyzing N-alkylation reaction by TEMPO and TBN
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Paragraph 0050; 0051, (2019/11/20)
The invention discloses a method for catalyzing N-alkylation reaction of aniline and 4-hydroxy-2-butanone by TEMPO and TBN. 4-hydroxy-2-butanone and different anilines are used as the reaction substrate, TEMPO (2,2,6,6-tetramethylpiperidine oxide) is used as catalyst, TBN (tert-butyl nitrite) is used as cocatalyst, dimethyl sulfoxide or N,N-dimethylformamide or toluene is used as solvent, N-alkylation product is obtained in nitrogen atmosphere at room temperature, no other by-products are detected. The preparation method of the invention uses TEMPO and TBN to catalyze aniline compounds and 4-hydroxy-2-butanone to perform N-alkylation reaction.
Iodine-catalyzed coupling of β-hydroxyketones with aromatic amines to form β-aminoketones and Benzo[h]quinolones
Miao, Changqing,Jiang, Liya,Ren, Lanhui,Xue, Qingxia,Yan, Fang,Shi, Weiwei,Li, Xinjian,Sheng, Jiwen,Kai, Shuangshuang
, p. 2215 - 2228 (2019/02/27)
An iodine-catalyzed coupling of β-hydroxyketones with aromatic amines to yield β-aminoketones and benzo[h]quinolones had been developed. Noble metallic catalysts, oxidants, α β-unsaturated ketone intermediates and aza-Michael addition were not involved in this coupling reaction which made it unique when compared to other reactions reported in literature. Inexpensive iodine catalyst, easy accessible raw materials, mild reaction conditions, good functional group tolerance and excellent selectivity made this coupling reaction be a practical method. This reaction can also be scaled up.