22259-90-1Relevant academic research and scientific papers
N-Heterocyclic Carbene-Catalyzed Mannich Reaction for the Synthesis of β-Amino Ketones: N,N-Dimethylformamide as Carbon Source
Alanthadka, Anitha,Devi, E. Sankari,Selvi, A. Tamil,Nagarajan, Subbiah,Sridharan, Vellaisamy,Maheswari, C. Uma
supporting information, p. 2369 - 2374 (2017/07/22)
The efficiency of N,N-dimethylformamide (DMF) in the N-heterocyclic carbene-catalyzed Mannich reaction for the synthesis of β-amino ketones has been demonstrated. This strategy involves oxidative coupling of aryl methyl ketones and 2-aminopyridines in the presence of DMF. The reaction does not require pre-functionalization of the substrates, thus making it a practically applicable approach for the generation of β-amino ketones. The reaction requires the use of tin(II) chloride dihydrate (SnCl2?2 H2O) as Lewis acid in the presence of tert-butyl hydroperoxide (TBHP) as the oxidant. The reaction was tolerant to several aryl methyl ketones, including 2-acetylnaphthalene and acetylthiophene. Various substituted 2-aminopyridines react with acetophenone to give the desired β-amino ketones in good yields. (Figure presented.).
