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Volumn 50, Issue 15, 2009, Pages 1754-1756

Nickel nanoparticle-catalyzed facile and efficient one-pot synthesis of polyhydroquinoline derivatives via Hantzsch condensation under solvent-free conditions

Author keywords

Green chemistry; Hantzsch condensation; Nanoparticle; Polyhydroquinoline derivative

Indexed keywords

NANOPARTICLE; NICKEL; ORGANIC SOLVENT; QUINOLINE DERIVATIVE;

EID: 60649101872     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2009.01.140     Document Type: Article
Times cited : (270)

References (32)
  • 29
    • 60649112670 scopus 로고    scopus 로고
    • note
    • 4 solution was adjusted to 13 by adding an ammonia solution with continuous stirring. The reaction mixture was refluxed at 70 °C for one hour till the final color of the solution became black. The growth of Ni nanoparticles was completed after 1 h. The particle size and structure of the resultant Ni nanoparticles have been characterized by X-ray diffraction (XRD), transmittance electron microscopy (TEM), and energy dispersive X-ray (EDX) analysis.
  • 31
    • 60649112872 scopus 로고    scopus 로고
    • note
    • Synthesis of polyhydroquinoline derivatives: A mixture of aromatic aldehyde (1 mmol), dimedone (1 mmol), ammonium acetate (1.5 mmol), ethyl acetoacetate (1 mmol), and Ni nanoparticle (10 mol %) which was taken in a Borosil beaker. The reaction mixture was homogenized with the help of a glass rod and irradiated in a microwave oven (540 W) by intervals of 5 s. The progress of the reaction was checked on TLC. After completion, the reaction mixture was cooled at room temperature. Then, it was extracted with ethyl acetate; the organic layer was dried over sodium sulphate and concentrated in a vacuum to afford the crude products. The pure products were obtained by recrystallization from ethanol. Nanoparticles were recovered by centrifuging the aqueous layer and reutilized four times for the same reaction (Table 2).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.